Cobra Extracts oil is gently coaxed from family farmed cannabis crops. We never use any harmful solvents and we purify the oil using our innovative cold refining process. This allows us to produce exceptionally potent CO2 oil that is crystal clear, glows a beautiful amber color, and drips like honey. Unlike some other companies, we never add any additives or "cut" our oil with anything. All Natural. Pure and Simple. -- Sour Diesel, sometimes called Sour D, is an invigorating sativa-dominant strain named after its pungent, diesel-like aroma. This fast-acting strain delivers energizing, dreamy cerebral effects that have pushed Sour Diesel to its legendary status. Stress, pain, and depression fade away in long-lasting relief that makes Sour Diesel a top choice among medical patients.