I bake muffins daily for my partner to snack on mid morning. If you're a lover of a good Cappuccino, you really want to try these. Moist, fluffy, and loaded with great flavour, really, they're too good not to try! If you're out of sour cream just use milk, if you've only got instant coffee to hand, no worries use that, either way these are super tasty. (Incidentally, I often halve this recipe with equally good results).