Clean and wash the squid thoroughly. Slash a diamond pattern on 1 side of the squid and cut into 2 inch pieces. make the vinegar sauce. In a large pot, bring the water to a boil; add oil and ginger. Add the squid and boil quickly for 2 minutes. Drain and place on a platter. Pour the vinegar sauce on top and serve hot or cold.
Vinegar Sauce: 2 Tbs white vinegar, 1/2 tsp. sugar, 3 Tbs. light soy sauce – Combine all ingredients in a cup and mix well.