Steve Wertz said:Old Mother Ashby said:The meat I'm talking about is very, I suppose you would call it sinewy.
It takes a bit of effort to cut it up raw if you don't want to cook it
in the piece, but the gristle all melts down in the cooking and the
liquid sets into a pretty solid jelly.
That collagen is mostly fat.
-sw
Thank you, collagen is the word I was looking for - I think that, as so
often happens with rfc, we have a semantic problem. Collagen and fat are
both forms of connective tissue, but they are different substances. If
I may quote Harold McGee, at page 130:
"The major connective tissue filament is the protein called collagen,
which makes up about a third of all the protein in the animal body, and
is concentrated in the skin, tendons and bones. The name comes from the
Greek for "glue producing", because when it's heated in water, solid,
tough collagen partly dissolves into sticky gelatin. So unlike the
muscle fibers, which become tougher with cooking, the connective tissue
becomes softer....
Fat tissue is a special form of connective tissue, one in which some of
the cells take on the role of storing energy. Animals form fat tissue in
three different parts of the body: just under the skin, where it can
provide insulation as well as energy; in well-defined deposits in the
body cavity, often around the kidneys, intestine, and heart; and in the
connective tissue separating muscles and bundles within muscles. The
term "marbling" is used to describe the pattern of white splotches in
the red matrix of muscle."
When I said beef cheek had no fat I meant fatty fat, the kind that rises
to the top of the liquid and will solidify on cooling. Beef cheek is of
course loaded with collagen which dissolves and makes the liquid
unctuously sticky.
Christine