Wash the greens in a sink filled with cold water. Drain greens and wash a second time. Drain greens and remove any heavy stems. Tear leaves into bite-sized pieces. Set aside.

In a 3 qt saucepan, cook bacon until lightly browned. Add onions, cook over medium heat 5 to 7 minutes, stirring occasionally, until onions soften and start to brown. Stir in garlic. Add water to the hot pan, stirring to loosen any particles from bottom of pan. Stir in sugar and red pepper. Continue cooking until mixture boils. Add greens, reduce heat. Cover and simmer for 30 minutes. Stir in vinegar. Continue cooking additional 20 to 25 minutes or until desired tenderness.