Write a statement comparing a chemical equation to a cooking recipe?

i know that the answer is ratio and proportion, but i don't know what that means, can you please expand on what it means that an equation and a recipe have ratio and proportion in common.

to me ur answer goes like this:

for 1 molecule of water u require 2 hydrogen and 1oxygen

likewise if u prepare a cup of tea u need to put 1/2 cup water,1/2cup milk,1spoon of sugar and tea leaves if u increase or decrease the ratio the taste might not be appropriate.

i think this wud help u out 4 ur right answer.