I recorded the weights of the spices I used last time I made a blend. It made a ton, so you could probably cut the numbers by 5x. But this is a pretty good blend, and you can adjust it how you like with whole numbers.

- 100g green cardamom seeds (no pod)

- 66g black pepper

- 12g cinnamon

- 6g nutmeg

- 6g cloves

Blend them in a spice grinder and you're good to go. If you really like cinnamon, you can double its weight. And you can add other spices like star anise, fennel, etc. there are probably thousands of ways to make chai spice blends.