Shaker & Spoon's lemon-grapefruit oleo saccharum sour from our That's Amaro! box. This special sour is part oleo saccharum, so it's flavorful with a bit of bitterness to it. Use it to make more delicious Vino Labbra cocktails or experiment with your own creations! Use in place of any sour mix. 4 fluid ounces. Ingredients: lemon juice, sugar, lemon zest, grapefruit zest