Process or blend the shrimp with the garlic, scallions, salt, flour, sherry, and enough water to make a thick batter. Let stand, covered with plastic film, for 1 hour. Then fry, in drops of 1 heaping teaspoon, into the oil poured to a depth of 2 inches in a pan, for about 1 minute each side, or until golden brown. Drain on paper towels.
Recipe courtesy of Nigella Lawson