Wash the fresh strawberries thoroughly under cool running water. Remove the stems and slice them in half.

Peel and chop the fresh pineapple into bite-sized chunks, eliminating any tough core pieces.

In a blender, combine the chopped pineapple and halved strawberries. Squeeze in the juice of a fresh lime and add agave nectar. Blend on high for 30 seconds until smooth.

Place a fine sieve over a large pitcher and pour the blended mixture into it, pressing down to extract the juice.

Chill in the refrigerator for about 10 minutes, or serve immediately over a glass filled with ice cubes. Garnish with fresh mint leaves if desired.

Pour into glasses, adjust sweetness with extra agave nectar if needed, and stir well before serving.