Rinse cucumber and peel it. Chop to tiny bite size pieces (about ¼ to ½ inch). If you prefer you may even grate it. Grated cucumbers let out moisture so make sure you use only greek yogurt if you want to grate them. Otherwise cucumber raita becomes runny.
Also fine chop coriander and mint leaves (optional).
Deseed the green chilli and chop. (optional)
How to make cucumber raita
Whisk chilled yogurt in a large mixing bowl.
Add chopped cucumber, green chilies, coriander leaves, mint leaves and salt. Mix all of them.
Taste test and add more salt if needed. Drizzle cumin powder, ground black pepper & chaat masala (optional).