The elderflower comes from a 200-acre organic farm near the Welsh border, which is about as specific a provenance as you get in the canned soda world. Apple juice does the sweetening work here, keeping it natural without reaching for cane sugar or sweeteners. The result is lighter and more genuinely floral than most elderflower drinks, with the apple bringing a clean backdrop rather than competing for attention. At 46 calories per can it sits very comfortably in the low-calorie bracket. Good with ice on a warm afternoon, or as a mixer if you're after something delicate.