To your cocktail shaker, add some ice, as well as the lime and grapefruit juices and the agave syrup. Shake well for 30 seconds to a minute.
Place some pink sea salt and Tajin on a small plate and mix them well together. Take your chosen glass and run a lime around the rim of it, then dip the rim in the Tajin/sea salt mixture to rim the glass.
Strain the mixture from the shaker into the glass.
Add new ice and then top with the Sea Cider.
Garnish with additional slices of lime and grapefruit and enjoy!
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Keyword cinco de mayo, cocktail, mocktail, paloma, zero proof