Yogi: How to be mindful when eating? Should I eat slowly?

Sayadaw: Not too slowly. When you’re eating, which door is working? All 6 senses are working.

So, you can practice seeing and looking one day. The next day, you practice hearing; and the next day, smelling. You continue being aware of tasting the next day, and the movement of the body the day after. On the sixth day, you practice being aware of the 5 senses all together.

When you eat, all 6 sense doors are working. First, you try to be aware of seeing, hearing, tasting, smelling, body action, and the mind, one by one. Later, you can know them working together.