Here's the ingredients from one commercial kebab paste. Wouldn't it be less hassle to order it on the web, along with a few other bit of course, and have it delivered? ;D
Vegetable Oil, Garlic, Rusk (Wheat Flour, Salt, Raising Agent: Ammonium Bicarbonate), Water, Salt, Ginger, Cumin, Coriander, Turmeric, Acidity Regulator: Sodium Diacetate, Spices, Tamarind, Food Acids: Citric, Acetic, Preservative: Sodium Metabisulphite.