Prep Time 25 minutes mins
Cook Time 10 minutes mins
Resting Time 5 hours hrs
Total Time 5 hours hrs 35 minutes mins
Keep dough cold for crisp, clean edges and avoid overmixing once flour is added to prevent spreading. If the dough cracks when rolling, let it warm for 5 minutes; if it sticks, dust lightly with flour or roll between parchment sheets. For icing, a 15–20 second line test means a drizzle disappears into the surface in that time; thicken with more powdered sugar or thin with drops of water until it behaves. Work in small batches to prevent icing crusting in the bags, and cover any unused icing with plastic touching the surface. Store decorated cookies in an airtight container once fully dry; they keep soft for 4–5 days or freeze undecorated cookies for 2 months.