Tempura deep frying can be so simple that you will want to show off to your friends. The main ingredients are shrimps, vegetables and fish of your choosing. Directions: Heat the oil to 340F or 360F. Dip the shrimp, vegetables or fish in the batter and place them in the oil. If it is difficult to handle the vegetable chunks, you may use a tablespoon to drop them in. Do not fry too much at a time, in order to maintain the temperature. Take the tempura out of the oil just when the batter gets SLIGHTLY brown. Vegetables usually take less than two to three minutes. Remember: the thinner the vegetable, the faster it cooks.