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
بِسْمِ اللَّهِ وَعَلَى بَرَكَةِ اللَّهِ
In the Name of Allah, and with the blessings of Allah.
Sahihاللَّهُمَّ بَارِكْ لَنَا فِيهِ وَزِدْنَا مِنْهُ
O Allah, bless it for us and give us more of it.
Hasanالْحَمْدُ 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.
Hasanاللَّهُمَّ بَارِكْ لَنَا فِيمَا رَزَقْتَنَا
O Allah, bless us in what You have provided us.
Sahih