Step 1

Make the mango layer by adding chopped mango, Cointreau, tequila, and lime juice to a blender and process until smooth.  Pour into a Pyrex measuring cup and set aside, then rinse the blender.

Step 2

Make the strawberry layer by adding strawberries, strawberry liquor, tequila, and lime juice to a blender, then process until smooth.  Set aside.

Step 3

Rim two glasses with a lime wedge and salt if desired.  Fill each glass about halfway with ice, then pour half of the mango mixture into the bottom of each glass.

Step 4

Carefully pour half of the strawberry margarita mixture into each of the two glasses, gently pouring it across the back of a spoon or a small spatula.  It will mostly float on top of the mango layer.

Step 5

To create the yellow/red swirl effect, gently insert the small spatula or spoon down one edge of the glass, and then pull it out. Repeat this step two more times at even intervals around the glass.

Step 6

Garnish with fresh strawberries or lime wedges, and enjoy!