top yeast

noun

1. yeast that rises to the surface as froth during fermentation.

Example Sentences

It has not, however, been possible to transform a typical top yeast into a permanent typical bottom yeast.

From Project Gutenberg

The casks being well prepared, perfectly sweet and dry, and placed on the stand ready to receive the liquor, first skim off the top yeast, then fill the casks quite full, bung them down, and leave an aperture for the yeast to work through.

From Project Gutenberg

I know an Inn-keeper of a great Town in Bucks that is so curious as to take off all the top Yeast first, and then by a Peg near the bottom of his working Tub, he draws off the Beer or Ale, so that the Dreggs are by this means left behind.

From Project Gutenberg