Bolinas Crab Pasta with Citrus and Mint

Ingredients

• 1 package dried spaghetti
• 6 tablespoons unsalted butter
• 1/4 cup freshly squeezed lemon juice
• 1/2 pound cooked crabmeat
• Sea salt, to taste
• Freshly ground black pepper
• Zest of 2 lemons
• 1/4 cup chopped fresh mint leaves
• Red-pepper flakes (optional)
• 1 lemon, quartered