Place short ribs in the slow cooker. Add soy sauce, brown sugar, ginger root slices, garlic cloves, and jalapeno peppers. Set to low and cook for 6 hours. If possible, flip the ribs over after 3 hours and baste with the sauce.
After the cooking time, remove the ribs from the slow cooker. Skim off any fat from the sauce and discard. Serve with rice and vegetables and drizzle with the sauce.