Glucose Syrup

Let me tell you about Glucose Syrup, and why every good confectioner keeps a jar of it close.

Sugar, left alone when it cools, wants to turn back into crystals — tiny, sharp, grainy ones that coarsen a careless caramel. Glucose Syrup slows this down, getting in the way so the sugar cannot line up as easily into those rough crystal rows. That is why professionals call it an "interfering agent." But do not think that is all it does — it also gives body to a syrup and helps it hold moisture. No mystery, no magic — just a helping hand, with more than one job to do.

Choose it by look, not by label. It should be thick, clear, almost colorless, pouring slowly like honey but without honey's gold. And taste it — good Glucose Syrup barely tastes of anything at all.

Some people say Glucose Syrup is just liquid sugar, nothing special. No! It crystallizes far less readily than plain sugar, and that difference is exactly why confectioners reach for it. Treat the two as the same thing, and you will learn the hard way: skip the Glucose Syrup, and your caramel can turn gritty instead of smooth and glossy and clear.