Al-Hamdu Lillah

Anas bin Malik  (May Allah be pleased with him) reported:

The Messenger of Allah (Sall-Allahu alayhi wa sallam) said,

"ALLAH, Subhanahu wa ta'ala, will be pleased with

His slave who praises Him

(i.e., says Al-hamdu lillah)

when he eats and praises Him when he drinks".

[Muslim].

Commentary:  

If  a person expresses his gratitude to Allah Subhanahu wa ta'ala,

for food, which besides being a source of nourishment is enjoyable for him,

he gets a reward for it and thus even eating can become rewardable too.