Combine all the ingredients together in a small bowl and give it a good mix.
Transfer it to a glass jar or container and store.
Notes
Want to dial down the flavors of the mayonnaise? Cut down on the amount of tandoori masala you're adding in, or just add some more mayonnaise and give it a good mix.
If your leftover mayonnaise has turned thick after being refrigerated, add a splash of milk to loosen it up.
To lend the mayonnaise a bit of extra flavor, add some fresh minced garlic or garlic powder into the mix.