People were asking in General about what these are. The Tincture kit recipes are pretty straightforward mix of Herb plus Hooch, except for Essence of Purple, which requires 23 Purple Flowers, 2 Hooch, and 1 Tangy Sauce.
Otherwise,
Essence of Herb = x herbs plus 1 hooch.
x
Yellow Crumb 6
Gandlevery 3
Hairball 5
Rookswort 5
Rubeweed 5
Silvertongue 4