Allow cream cheese to soften at room temperature. Mix in the sugar and lemon juice until smooth. Cut flour tortillas into fourths. Place 1 ounce cream cheese mixture at wide end of tortilla. Roll toward point and secure with toothpick. Freeze the flautas until frozen. After they are frozen, deep fry the flautas for 2 1/2 minutes at 350 degrees. Drain and roll in powdered sugar while they are still warm. Serve with strawberry puree.