Prep the ginger — Chop the ginger knob into small pieces. No need to peel if you're straining.
Prep the citrus — Halve your lemons and oranges. Peel the lemons if you want a cleaner, less bitter flavor. Oranges can stay unpeeled.
Juice or blend — Run everything through a juicer, OR add to a high-speed blender with a small splash of water and blend until smooth.
Strain — If using a blender, strain through a fine mesh strainer or nut milk bag. Press the pulp firmly to extract every last drop of juice.
Add spices — Stir in the turmeric and black pepper. Mix well.
Serve or store — Pour into shot glasses and drink immediately, or transfer to a glass jar and refrigerate for up to 5 days. Shake well before each use.