The Food Lab: Better Home Cooking Through Science

optimally—after that,   it

may harden; hard    brown

sugar   can be  restored    by

briefly microwaving.

Sugar,

granulated

Transferred to  a   sealed

container,  indefinitely

Vanilla

Extract

1 to 2 years

Yeast,

instant

(rapid-

rise)

If  possible,   purchase    in

bulk    and transfer    to  a

sealed  container;

individual  packets are

harder  to  use and far

more    expensive.  Keeps

indefinitely    in  the

freezer;    if  stored  at

room    temperature or  in

the fridge, it  will    need    to

be  proofed occasionally:

add 2   tablespoons warm