Antstore also sells food.
I thought I try it out.
For Messor species, they sell a mix of tubes containing different size seed as well as different powders.
One powder is a sugar which you can mix with water for creating sugar water.
Another powder is "frugivore"- I tried it myself and it appears to be powdered dried banana. This you also mix with water to create a paste.
And then they have "protein" food- which I assume is just ground up insects, which you also mix with water for a paste. The ground up insects reminds me very much of the insectivore mix that we feed to wild insectivorous birds ( I worked with wild birds for my Master and PhD degrees at university).
So I tried out the banana powder-paste and the insect paste with my Messors, and yes of course, the ants are pigs when it comes to food, they actually eat it.