Peel and chop the lemons, grapefruit, and ginger.

Place them in a high-speed blender. Add all the remaining ingredients and blend until smooth.

Using a fine mesh sieve, strain the mixture into a jug, discarding the solids.

Divide your mixture equally among 10 silicone muffin cups. Fill them just about 2/3 up. You should have about 1/4 cup of the mixture for each portion.

Serve immediately or refrigerate for up to 2 days.

With the remaining shots, freeze until solid, then remove from the silicone cups and place into an airtight container.

Keep frozen for up to 1 month.

To use the frozen shots, fill 2/3 of a mug with hot water and carefully add in your frozen shot. Stir until melted, then add additional fresh lemon juice or honey to taste, if desired.

Serve warm like a mug of tea.