اللَّهُمَّ بَارِكْ لَنَا فِيهِ وَأَطْعِمْنَا خَيْرًا مِنْهُ
Allahumma barik lana fihi wa at'imna khayran minhu
O Allah, bless it for us and feed us something better than it.
This is the du'a the Prophet ﷺ taught for after drinking milk. For other foods, the du'a is simply "Allahumma barik lana fihi wa zidna minhu" (bless it and give us more). But milk is special — it is both food and drink — so the Prophet ﷺ asked for something even better. Scholars say the "better" refers to the drinks of Paradise.
Related Du'as
الْحَمْدُ لِلَّهِ الَّذِي أَطْعَمَنِي هَذَا وَرَزَقَنِيهِ مِنْ غَيْرِ حَوْلٍ مِنِّي وَلَا قُوَّةٍ
Praise be to Allah who fed me this and provided it for me without any effort or power from me.
Hasanالْحَمْدُ لِلَّهِ الَّذِي جَعَلَهُ عَذْبًا فُرَاتًا بِرَحْمَتِهِ وَلَمْ يَجْعَلْهُ مِلْحًا أُجَاجًا بِذُنُوبِنَا
Praise be to Allah who made it sweet and fresh by His mercy, and did not make it salty and bitter because of our sins.
Atharبِسْمِ اللَّهِ
In the Name of Allah.
Sahihاللَّهُمَّ بَارِكْ لَنَا فِيمَا رَزَقْتَنَا وَقِنَا عَذَابَ النَّارِ
O Allah, bless us in what You have provided and protect us from the punishment of the Fire.
Hasan