Questions tagged [chemistry]

Questions about the chemical composition or properties of ingredients and dishes.

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4
votes
2answers
2k views

Why my meatballs sweated all of their fat?

I have made simple meatballs with red onions, some eggs, drizzle of olive oil and chopped scallions. Put them into the oven at 220c (440f) and this is what came out: They sweated all of their fat and ...
0
votes
4answers
996 views

Is salty tongue effect normal after eating sichuan peppercorns?

I've used sichuan peppercorns many times previously and never had this effect before where my tongue becomes salty for a while after eating it. Normally I would just get the buzzy, numbing effect but ...
3
votes
0answers
1k views

Eggless choux pastry recipe yields paper-thin top, gooey bottom

I'm trying to make eggless choux pastries for an egg-allergic friend (my eventual targets are croques-en-bouche and saint-honorés). I have experience with choux pastry, but I've never made an eggless ...
2
votes
2answers
168 views

Technical reasons against chocolate-coated shortbread

It is possible to find chocolate-coated shortbread (as in, the Scottish biscuit made of flour, sugar and butter, coated with chocolate) as a product in the UK, but it's very rare. Chocolate-coated ...
1
vote
2answers
522 views

Does Sugar Cook Eggs?

There's a old wives tale of sugar cooking eggs. I was wondering if there's any substance to that or if it's merely a concentration of the egg as the sugars absorb water. I was watching The Try Guys ...
2
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0answers
39 views

How does the viscosity of honey affect bread machine results?

The first time that I used this blueberry oatmeal bread machine recipe, I used honey that was liquid at room temperature. The second time, I used honey that was solid at room temperature. In order to ...
4
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4answers
2k views

Estimating the fat content of homemade chicken foot gelatin

I recently simmered a pot of chicken feet (including skin) for the first time and made an astonishingly gelatinous gelatin. It's clearly suffused with chicken fat, but I have no idea how much -- I don'...
5
votes
1answer
301 views

Chemistry of maple butter

I've recently tried to make maple butter with the following recipe: Heat maple syrup to about 110 - 115°C Cool to about 20°C (by putting the pot in an ice/water bath) Stir manually for 20-30mins I ...
2
votes
1answer
154 views

Does pasta boiled in tap water absorb chemicals?

Apparently chlorine goes with boiling but I'm not sure if this is true. However I know that chloramines also exists in tap water and concentrate more with boiling. Will the chloramines absorb into ...
2
votes
1answer
226 views

Why should milk boil to the rim?

In some cases hot milk is needed. My example is a ready made mixture for milk rice. The direction says I should heat the milk until it shows foam raising, which often raises up to the rim (or more). I ...
30
votes
2answers
5k views

Why do shrimp / lobster / crab turn pink or red when cooking?

Cooking is a form of chemistry - so there must be a scientific reason behind this. Why do all crustaceans turn pink or red when cooked?
4
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4answers
12k views

PH and sour / acid taste

I had always thought low pH foods had a noticeable sour (acid) taste, and vice-versa. But when reading The Bread Builders by Daniel Wing & Allan Scott, on page 54, it says: The sour taste of ...
12
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1answer
8k views

What determines the 'saltiness' of salt?

I've bought two brands of salt that are completely different in terms of 'salt' concentration(not sure if this is the correct terminology). I realized this because I needed three or four times more ...
1
vote
1answer
162 views

Eating with silvered cutlery

I have a set of silvered cutlery with which i often eat. I recently heard that the handles of a lot of older silvered cutlery is filled with lead or they are even made out lead. Am i safe to eat with ...
2
votes
2answers
572 views

Pitaya Red Velvet Cake became brown

Starting point: I was trying to follow a red velvet cake recipe from the internet, but since I always try to replace industrial/artificial ingredients by more "natural" ones (just out of curiosity), ...
0
votes
1answer
189 views

What is the maximum allowed temperature to cook onions saving the fructooligosaccharides?

Onions are a great source of fructooligosaccharides that are a natural prebiotic that beneficial bacteria of our gut microbiome feed on. Having read about this I have started eating raw onions but ...
16
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1answer
7k views

Why does my banana bread have a moist top?

My mother always made banana bread when I was growing up, and my favorite part was the the fact that the top of the loaf was sweet and moist, to the point that it would leave residue if you touched it!...
7
votes
2answers
184 views

“For optimal flavor, open the package 30 minutes before eating” - only temperature or also chemistry?

Packages of ham or smoked fish sometimes have a hint like the one I quoted in the title. They are usually stored in the fridge, so one part of the reason to take it out of the fridge and open it ...
13
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4answers
28k views

homemade mint extract

I've got some mint in the yard (I think it's apple mint, as the leaves are very fuzzy and rounded) from which I'd like to make mint extract. No specific use in mind (except perhaps insect repellent), ...
-1
votes
1answer
401 views

What edible solution can I use cover biscuits to make it waterproof and stronger?

I want to make hard biscuits like teething biscuits Now the biscuits which I have made is not so strong and observes moisture quickly I use all purpose flour, a little baking powder,oil , a little ...
3
votes
1answer
2k views

What is meant when a spice is water-soluble?

Coriander and basil are said to be water-soluble. However, I'm not quite sure what this means. If you put the leaves into water the leaves do not dissolve. They are still there at the end. I know ...
2
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3answers
5k views

Chemical meat tenderizers

I know pineapple (Hawaiian cooking), onion (Chaliapin steak), pickle juice (Chick-fil-A) and honey (Shokugeki no Soma). All tenderize meat via cooking and / or marinating. My questions are: What ...
3
votes
1answer
585 views

What protease is in avocado?

What protease in particular does avocado contain? I've been searching everywhere for it on the internet and still couldn't find any answers.
8
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1answer
3k views

How can I tell which fruits etc. contain proteases?

After my second attempt at making a ginger mousse with gelatin and finding that it fails, I've discovered that fresh ginger contains a protease. I knew that pineapple does, and that it complicates ...
2
votes
1answer
2k views

How to make hard candy with only fruit as a sweetener

I have a child with a restricted diet that can have no added sugar or other form of sweetener, with the exception of fruit juice. He is in desperate need of cough drops or throat lozenges, but I find ...
5
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3answers
5k views

How does the meat in Weisswurst get so white?

I have looked for the answer online, but no luck so far. Does the ice "burn" the meat and it gets white? How does it work?
1
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1answer
170 views

Dried fruit and calcium levels [closed]

My daughter suffers from lactose intolerance and/or milk protein allergy (this has yet to be confirmed by a paediatrician due to the way the NHS works in the UK). I tend to bake fruit cakes and mix ...
2
votes
1answer
185 views

Can flavoring extracts be added to inverted sugar?

I'd like to try doing a recipe with inverted sugar (hand pulled cotton candy), but am entirely new to candy making. I have the instructions to create inverted sugar, but would like to add a flavoring (...
2
votes
2answers
5k views

How to make Menthol crystal from mint leaves? [duplicate]

I have peppermint/mint growing in my garden backyard. I want to make mint candies for children and in one of the YouTube videos they have menthol crystal as one of the ingredients for mint candies so ...
10
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2answers
3k views

How does sunlight degrade cooking oil?

Why exactly is it recommended to store cooking oil away from sunlight? How does sunlight accelerate spoilage?
5
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2answers
4k views

How can I extract menthol powder from fresh mint/peppermint?

I have peppermint/mint growing in my garden backyard. I want to make Ice Cream for children and they are asking for some flavour paan ice cream in Hindi (mint ice cream) and for that I want Menthol ...
5
votes
1answer
970 views

Does cumin contain curcumin? If not, where does the name come from?

According to Wikipedia, curcumin was originally isolated from tumeric. However, I haven't been able to find why it was named curcumin or whether or not it cumin is currently known to contain it.
2
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0answers
69 views

Can you alter nutritional properties of beans and other ingredients using diastatic malt?

I was reading about brewers' spent grain the other day and its nutritional profile (high protein and fiber content, no carbs) and how it's obtained. Would something similar be possible with beans and ...
3
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2answers
10k views

Differences between gel and gelatine

Are they physically different? If so, what is the difference, between a gel and gelatine, or it's proccesses gelation and gelling (gelatinization. gelatinisation)?
6
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1answer
2k views

How to calculate the pH of a lye solution?

I'm trying to figure out if I can substitute the catholyte from a salt water electrolysis system for a lye solution in pretzel making. In order to figure this out, I need to know the pH of my lye ...
3
votes
2answers
2k views

Triple cooked chips: Removing moisture by cooling

Triple cooked chips (French fries) are made by: Boiling the chips, then cooling them in the fridge/freezer to remove moisture Deep frying at a low(ish) temperature, then cooling again as above Deep ...
10
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3answers
3k views

Does mayo “break”/decompose if you stop whisking then whisk the other way?

Is is true or an urban legend that if you whisk the opposite way while making mayonnaise (after you've whisked in one direction for a while), the mixture will be "undone" into its components?
2
votes
1answer
301 views

Can bananas really be ripened through oven baking?

I am following a diet for IBS called the Specific Carbohydrate Diet (SCD). Only bananas that are ripe, i.e. well spotted, can be consumed. Green and non-spotty can not be due to a difference in ...
6
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2answers
3k views

How to sweeten bread without sugar

I know that sugar molecules are large and too many of them can prevent a proper gluten network from forming when making bread. What other things can be used to sweeten bread instead of sugar? I'm ...
2
votes
2answers
4k views

Why should I add salt to my curries?

I've been advised by a friend of mine that I have to add salt to my curries if I want the spices to come out and not leave me with a bland curry. Now after being a doubter, as I never add salt to my ...
33
votes
7answers
14k views

Can one bake a cake with a cooked egg instead of a raw one?

This recent question about a person who wanted to bake a cake but only had a cooked egg left suggested me an even stupider one: is it possible to bake a cake with a cooked egg instead of a raw one? ...
13
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1answer
2k views

Does sputtering butter mean that water is present?

When I place a pat of butter in a hot pan, the butter melts and begins to sputter and steam. Then steam bubbles pop which sends tiny grease drops flying out of the pan. This happens consistently ...
-2
votes
1answer
295 views

Can one use cooked egg to make fried eggs (sunny side up)? [duplicate]

As a kid, I never really liked cooked eggs, but fried ones. Naturally, I've always wondered if cooked eggs could be reused to make fried eggs with sunny side up instead of using new raw ones. I ...
3
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3answers
4k views

Create hot “sauce” from capsaicin extract

There are a lot of hot sauces like "Blairs Mega Death" with more than 500.000 scoville heat units. However, they do have some odd taste, which I don't really like. So I'm thinking of creating a sauce ...
16
votes
3answers
72k views

What is the purpose of oil or butter in bread?

Specifically in wheat and potato breads, what is the purpose of adding oil or butter to the dough? I have always assumed it was just for flavor, but I suspect there is some background chemical ...
4
votes
3answers
291 views

Why does my LN2 evaporate so quickly?

Just made my first attempt at cooking using liquid nitrogen. Decided to start easy, and make a 0.5L batch of ice cream, along with some powdered peanut-butter and banana for toppings. Overall I'd ...
8
votes
2answers
4k views

How do I calculate the final acidity of homemade vinegar?

I am making vinegar by mixing vinegar (containing the mother) and wine, and then allowing fermentation to occur. I am wondering how to calculate the final % acidity. Assume: I know the initial ...
8
votes
1answer
7k views

What turned my garlic purple?

I commonly use a technique when caramelizing onions, in which I add the sliced onions to a pan with salt, oil, and water. The water softens the onions and helps cook them evenly such that by the time ...
15
votes
3answers
29k views

Does chlorine evaporate from water when cooking?

Most municipal water supplies in the U.S. include noticeable levels of chlorine or chloramine added to kill microbes, and often adds an objectionable chemical smell. Does chlorine evaporate when ...
17
votes
3answers
78k views

Coconut Water from White vs Brown Coconuts

The warning label on each coconut describes how to treat the water within each. The water on the brown coconut is to be discarded; the water on the white coconut is safe for consumption. In what ...