Add the tequila, wine, juice blend and grapes with crushed ice into a blender and blend until smooth.
Place the coriander and mint leaves at the bottom of a mug or tub-shaped glass.
Pour the blended drink over top and add crushed ice.
Top with salt foam.
*Salt foam (optional): Stir 4 tsp salt, 3 grams lecithin and 400 mL water in a mixing bowl until combined. Use a fish aquarium pump to pump air into mixture.