Yes, a 750 watt mixer grinder with high speed stainless steel blades can grind dosa batter and tough spices effectively. Look for models with a wet grinding jar for the best results.

The Charles Ross & Son Co. (Ross, Hauppauge, N.Y., U.S.) line of high-speed dispersers are economical mixers widely used in various industries such as chemicals, polymers, composites, inks, paints, ...