fruits like papaya , pineapple are extremly helpful in digesch fat, or sweet and gas forming veggies like cauliflower, cabbage, raddish, too much quantity of dals , they can upset digestion. have salads and enough water to quench your thirst. add hing , ginger , cardomom , these herbs help in easy digestion of food. having buttermilk after your milk will also aid in digestion . in severe cases , you can take a glass of warm water and lemon, and walking for 10 min , after meal also helps in reliving gas.chew on saunf or cardomom after meal, or even basil. avoid intake of tea or coffe or alcohol immediately after the meal.