Strawberry Jam Biscuits

Name: Strawberry Jam Biscuits
Ingredients: 12 ounces fresh strawberries, hulled, halved or quartered if large (about 3 cups); 1 /4 cup sugar; 1 tablespoon finely grated lime zest; 2 tablespoons fresh lime juice; 3 /4 cup sugar; 2 teaspoons baking powder; 3 /4 teaspoon kosher salt; 2 1/4 cups all-purpose flour plus more; 1 /2 cup (1 stick) chilled unsalted butter, cut into 1/2-inch pieces; 1 teaspoon finely grated lime zest; 3 /4 cup buttermilk; 1 large egg, beaten to blend; 1 tablespoon raw sugar; Vanilla ice cream (for serving)