You can eat anything, but it's gonna hurt to swallow. Gargling with salt water before you eat helps with the pain. You should eat healthy foods until you feel better, and foods that aren't scratchy like chips.
You can take hot coffee, hot tea, hot tomato soup. No fried food, you can eat some carrots, cucumber, sweet corns, lemon juice, Take a teaspoonful of ginger extract with equal amount of honey sip it and wait for 10 to 15 minutes for any thing else to eat or drink. Take this syrup thrice a day it will help you very much. You can gargle with hot water with a pinch of common salt in it.