In a small saucepan, add the oil and grate or crush in the garlic clove. Once the garlic is just turning golden, pour in the soy sauce, sugar, chicken stock, rice vingear, and ginger. Let it come to a boil. Stir to dissolve the sugar and let cook for 3 minutes. Lower the heat and squeeze in the juice of the lemon and add the zest. Let simmer for one more minute. Remove from heat.