Drain the lychee syrup out of the can into a jar. Prep the margarita glasses.
Blend it up:
Add the lychee fruit from the can, ¼ cup of lychee syrup, the tequila, triple sec or Cointreau, lime juice, and ice into the blender. Blend until smooth, stopping a few times to stir if necessary.
Serve:
Pour the frozen lychee margarita into the prepared glasses and chill extras in the fridge or freezer (short term).
Notes
If using lychee puree, you'll need about 1 cup. This is pureed lychee fruit which is different than lychee syrup. The syrup is for flavoring only and contains no fruit.