For me, margaritas are a summertime staple. Having a warm day, chased with bright citrus fruit and tequila, all in a salt-rimmed glass is just one of my favorite things. That said, I also love seasonal margaritas, like this roasted grapefruit and habanero margarita. Instead of being tart as one would expect from a grapefruit-based drink, this margarita is slightly smokey, crisp, and just a little spicy. It's perfect for winter.