In a small saucepan, combine everything. Bring to a simmer, stirring occasionally. When the sugar has dissolved, remove from heat. Cool to room temperature.
From Sarah Jampel via Food52, adapted from Chad Robertson’s Tartine Bread.
You could also sub in 1 T amaretto, and omit the brandy and almond extract.
If you want to do the lemony grapes instead, toss 1 lb grapes with some melted butter and lemon zest, and roast in the oven until juicy and shriveled slightly.