Pucker up! Your taste buds are going to be tingling with all the great citrus flavors featured in these recipes. Using a vegetable peeler, remove the citrus zest in wide strips (avoid the white pith); measure 2 cups zest (if desired, reserve the remaining fruit for juicing or snacking). In a sterilized 2-quart canning jar or other glass jar, combine the 2 cups zest and the vodka. Cover tightly and let stand in a cool, dry place for 10 days, gently swirling mixture in jar once a day. Strain mixture through a fine-mesh sieve set over a large bowl; discard citrus zest. Return the infused vodka to the jar. For syrup: In a medium saucepan, combine sugar and the water. Bring to boiling, stirring until sugar is dissolved. Remove from heat; cool for 30 minutes. Pour cooled syrup into the infused vodka; stir to combine. Cover and chill overnight. Transfer liqueurs to sterilized half-pint canning jars or glass bottles. Seal and label. Store in refrigerator for up to 1 month. Preheat oven to 350 degrees. Grease and flour an 8×4-inch loaf pan. Whisk the flour, baking powder and salt together in a medium bowl and set aside. Using a mixer on medium speed, cream the butter and sugar toge...