What is used to thin icing for doughnuts?

• A. Water
• B. Milk
• C. Simple syrup
• D. Oil

Answer: (C)

When you want a glaze that pours smoothly over donuts, you adjust its thickness with a liquid that keeps the glaze sweet and glossy. Simple syrup fits this need well because it’s already sugar and water, so it blends evenly into the icing to thin it without diluting flavor too much or making it matte. It helps the glaze spread and set with a nice shine, giving the right pourable consistency. Water would thin the glaze but can dull flavor and gloss. Milk adds dairy and fat, which can change texture and how the glaze sets. Oil would introduce fat that prevents proper setting and can cause separation. So using simple syrup achieves the right balance of thinning the icing while preserving sweetness and a good finish.