Blackberry Lime Cupcakes:

• 1 1/3 cup all-purpose flour
• 1 1/2 tsp baking soda
• 1/2 tsp kosher salt
• 1 pint fresh blackberries
• 3/4 cup granulated sugar
• 1/2 cup unsalted butter, room temperature
• 1/2 cup PLAIN yogurt
• 1 large egg
• 1 tsp vanilla extract
• 1 tsp lime zest
• 2 tbsp lime juice, from 1 lime

Blackberry Lime Frosting:

• 1 cup unsalted butter, room temperature this is 2 sticks
• 3-4 cups icing (confectioner's) sugar
• 1 tsp lime juice
• 2 tsp lime zest
• 1/2 tsp kosher salt
• 1-2 tbsp whipping cream
• 1-2 tbsp blackberry jam or purée