How To Wash Cocaine With Ammonia. FOB Reference Price: Get Latest Price. 51f937b7a3 Cocaine, water, a pinch of baking soda. Put them all in a spoon and heat the bottom of the spoon with a lighter or any open flame. The mixture will sizzle and an oily mix the cocaine into water will a pinch of baking soda in a spoon, put the lighter under the ...