barm

Seek your sa' where you got your ail, and beg your barm where you buy your ale.

Yeast, or barm, or leaven was used both in baking and in brewing.

He took her body on his arm, Her slumbering head lay on his barm.

And then you may work it with barm if you please; but it is most commended without.

When it is cold, set it together with some barm, as you do Beer.

Barm, brm, n. froth of beer or other fermenting liquor, used as leaven: yeast.

Playing the lonely martyr, too, wasn't much fun with this mischief working inside of him and swelling his lungs like barm.

If you will have it to drink presently, take the whites of two or three Eggs, of barm a spoonful, and as much of Wheaten-flower.

The measure of that is, till the barm (which is raised to a great head) beginneth a little to fall.

If a pottle of Barm do not make it work enough to your mind, you may put in a little more.