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

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6
votes
2answers
818 views

What factors affect collagen to gelatin conversion?

I have a bunch of oxtails I've been braising for hours in an adobo sauce and they remain awfully tough. What I'd love to see happen is for that abundant connective tissue to melt away and coat each ...
4
votes
1answer
194 views

The name or chemical compound responsible for a specific quality of some spices (numbness)

I'm putting together the results of a kitchen experiment and I'd like to be able to identify a phenomenon that I've noticed when using certain spices. I've felt it in some of what are often called ...
8
votes
2answers
391 views

How does hydration of a sourdough affect baking features?

Looking at different recipes for sourdough starters, there's everything from a mix as dry as cookie dough to as wet as gruel. In this (danish) recipe from the acclaimed chef Claus Meyer of a pretty ...
8
votes
1answer
803 views

Do breadcrumbs really act as a binder in meat preparations?

I routinely hear that breadcrumbs are added to burgers and meatballs to bind them. For example, see the answers to this question: how to stop meatballs falling apart. On the other hand, I have heard ...
7
votes
2answers
6k 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), ...
7
votes
1answer
1k views

Cooking Chemistry: lemon juice/soymilk buttermilk substitute turning bitter and 'rising'

I made a soup recipe the other night (mainly potato, spinach, and veggie broth) that called for buttermilk. I substituted soymilk and lemon juice, reading online that that was a good substitution for ...
4
votes
1answer
2k views

what makes red tomato sauce turn orange in colour?

I have noticed that tomato sauce (having started with deep red tomatoes) can turn orange. The colour change isn't from mixing in an ingredient of different colour such as cream. It seems to occur in ...
1
vote
1answer
100 views

Why does spinach lose its texture when cooked?

I know that cooking spinach until it loses its texture is called wilting, but what is the chemical process that is going on. It it losing moisture? If so why does it look so moist? Thanks!