I was reading a question here on Food and Cooking and no one seemed to know how much it is. I tried to Google convert it to cups but no dice.
So how much is it?
In this Gordon Ramsey scrambled eggs video he uses a "knob" of butter. It appears to be about 2 Tbsp.
I don't think it's intended to be a specific term. You'd never see "knob" used for baking, where exact amounts matter. When cooking, recipes tend to be a general guideline rather than a strict set of instructions.
I tend to treat it as 'a knifeful' but thinking about now it its probably about 1-1.5 tbsp, depending on how soft the butter is.
If the butter is too cold to get a knife to scoop it with, and I have to cut it, I try to cut a corner off starting about 1 cm into the edge, creating a pyramid type shape.
As @hobodave pointed out Gordon Ramsey uses about 2 tbsp, but that tends to be the same with the chefs, they go heavy on the salt and the butter and the cream.
2 or 3 tablespoons is equal to a knob. Also it depends on what you want, it is your choice how much your eggs taste of butter.
Perhaps it's equivalent to a "pat" of butter.
I believe the term "knob" of butter was developed and used in the days before standardized measuring. The amount is about 1 1/2 - 2 tablespoons -- about the size of a knob on a kitchen drawer.
Other non-exact measurements: palm, handful, wooden spoonful, size of a walnut, size of an egg, a glassful ...
Thank you for your interest in this question.
Because it has attracted low-quality or spam answers that had to be removed, posting an answer now requires 10 reputation on this site (the association bonus does not count).
Would you like to answer one of these unanswered questions instead?