Prep your papaya: Slice the papaya in half, scoop out the seeds, and peel the skin with a handheld peeler. Cut into smaller chunks so it fits into your juicer easily.
Prep your pineapple: Remove the skin and core, then cut into juicer-friendly chunks.
Juice it all: Start by running the spinach through your juicer. Follow with the pineapple chunks, and finish with the papaya.
Optional Strain: If you like your juice silky smooth, run it through a fine mesh strainer or nut milk bag as you pour it into your glass.
Serve cold: Pour over ice if you’re feeling fancy, or just sip it fresh and frothy straight from the juicer.