can you refrigerate confectioners sugar
Tap sugar with a spoon. If it starts to fall apart, turn oven off and leave sugar in the oven for an hour or two to completely dry out. Always store granulated sugar in an airtight container. Store confectioners sugar in a cool, dry location (not the refrigerator). When it gets moist, it develops lumps. And because of its physical properties, it may absorb strong odors if left unsealed. Confectioners sugar however cannot adequately be restored if it forms lumps because of the cornstarch used in the sugar.