Put the zest and juice from 1 lime into a blender. REMOVING ALL SEEDS
NOTE: The zest is the green portion of the peel which is absent of any white. ( The white part is bitter while the green part has the flavor and lime oil )
Wash raspberries and drip dry for several minutes, then add to the blender with a pinch of salt. Process until smooth add lemon lime soda. process until smooth one more time. Taste and add a small amount of sugar or honey
Put two ice cubes into two glasses, Pour mixture into glasses over ice cubes topped by a large scoop vanilla ice cream
Serve with a straw inserted into the center of the ice cream. A sprig of mint, a lime wedge, or a raspberry for a garnish.