What can I eat to regain weight?

[randomusername321]

What you eat is secondary to how much you eat. But what you eat matters too. Though that's not going to result into weight gain because you never ate enough to begin with. Step 1 is to be in a caloric surplus. But you don't want to get fat as you gain weight and rather do so healthily. So eat in a slight surplus and eat healthy foods. You can choose calorie dense foods such as nuts etc as well. Keep your diet balanced in all the three macros and you're good to go.

[BarryLiverstone]

Ask your doctor for a balanced diet. What is too small, you mean your waist?

[sheikalana]

If you're planning to eat seafood you're not a vegan. That's pescatarianism. The easiest way to gain weight is to eat carbs. Since you say you want to be vegan you can have carbs (pasta, rice, potatoes) and veggies at lunch.

[scott04sa22]

Just eat sleep and repeat