Generally I cook to taste, but package sizes are a major problem for baking.
Proportions need to be just so.
Baking gets thrown way out of whack with packages shrinking -example: I made these rum balls over the holidays with Nilla Wafers (I never buy those)- well the recipe called for a whole box (whatever the ounce was-forgot) but all the boxes I saw were smaller - had to buy two. Now I have this partial box of Nilla Wafers sitting around (I don’t particularly like them)
It’s a conspiracy!/partial sarc...