Instead of using Pataks tandoori paste, why not make you're own. Here is a recipe below

Tandoori Masala Spice Mix
Ingredients:
40g (about 8 teaspoons) coriander powder
30g (about 6 teaspoons) cumin powder
40g (about 8 teaspoons) garlic powder (not garlic salt!)
40g (about 8 teaspoons) ground paprika
20g (about 5 teaspoons) ginger powder
20g (about 5 teaspoons) mango powder
20g (about 5 teaspoons) dried mint leaves (finely ground)
10g (about 2 teaspoons) chilli powder (optional)
10g (about 2 teaspoons) powdered red food colouring (optional)
5g (about 1 teaspoon) powdered yellow food colouring (optional)
Method
1. Simply add all the ingredients to a bowl and mix thoroughly
2. Store in a clean, sterilised, air-tight, jar in a cool, dark, place and out of direct sunlight
Notes
1. If you are unable to weigh to the required accuracy, use 1tsp = 5g (approximately)
2. If any of the ingredients are too course (e.g. the mint leaves or garlic granules), grind them beforehand in a spice mill
3. Half the quantities of artificial food colouring for a less vibrant colour
4. If you are averse to using artificial food colourings (the colouring is aesthetic only anyway), either omit them or replace them with natural food colourings
5. If you wish to use natural food colours, replace the artificial colours with 20g (about 4 teaspoons) of beetroot powder + 10g (about 2 teaspoons) of anatto seed powder
6. To sterilise the jar, wash it in hot, soapy water, rinse it thoroughly, and dry it thoroughly, in an oven, at 100C