Kṛṣṇa is God. He can eat everything, everything. Kṛṣṇa ate fire, you know. There was forest fire in Vṛndāvana. All the cowherds boys they became very much frightened, "Kṛṣṇa." "Yes, I'm ready." He ate up all the fire. So for Kṛṣṇa He could eat anything He likes. He is God. But still, He recommends, patraṁ puṣpaṁ phalaṁ toyaṁ yo me bhaktyā prayacchati. Why? Because we have to take Kṛṣṇa's prasādam, so therefore He is recommending, "These things you can give Me." Patraṁ puṣpaṁ phalaṁ toyaṁ. So that is our food. We are devotees of Kṛṣṇa. We are meant for eating the remnants of foodstuff offered to Kṛṣṇa.
That is our... Jihvā, tāra madhye... If you want to conquer the tongue, then you fix up your mind that you shall not take anything which is not offered to Kṛṣṇa. Then your tongue will be controlled. Tāra madhye jihvā ati lobhamaya sudurmati. Tongue is the bitterest enemy of the living being. The tongue is dragging. Jihvā. "Kindly give me this immediately. Kindly give me this wine immediately. Kindly give me this tea immediately. Kindly give me this cigarette immediately. Kindly give me this meat." Why? Control. Kṛṣṇa says, patraṁ puṣpaṁ phalaṁ toyaṁ (BG 9.26). So we have to take prasādam, eat Kṛṣṇa prasādam. Then naturally the other things will be negativated. This is the position. Suhṛdaṁ sarva-bhūtānām (BG 5.29).