Juice the Fruits: Cut the grapefruit in half and juice to yield 4 ounces of grapefruit juice. Cut the lime in half and juice to get 2 ounces of lime juice.

Combine Ingredients: In a mixing jug, combine the grapefruit juice, lime juice, 2 ounces of maple syrup, and 2 teaspoons of date sugar. Stir well to ensure the date sugar and maple syrup are fully dissolved.

Prepare the Glasses: Fill 2 glasses with ice.

Pour the Juice: Divide the juice mixture evenly between the two glasses.

Add Sparkling Water: Top each glass with sparkling water, adjusting the amount to your taste preference.

Garnish and Serve: Garnish with slices of lime or grapefruit, and serve immediately. Enjoy your refreshing and healthy grapefruit mocktail!