I am skeptical of all of the replies so far implying that the threat of imminent starvation is what drove people to discover weird foods. We're intelligent omni

I am skeptical of all of the replies so far implying that the threat of imminent starvation is what drove people to discover weird foods. We're intelligent omnivores, we like finding and trying new foods. Finding as many food sources as possible is one of the essential tasks of a group of humans living in subsistence conditions. Note the distinction between subsistence and starvation. What went through their mind? Perhaps that milk spoils way too quickly and food that you can store for long periods of time is vital for survival. They probably would have known a great deal about the preparation and preservation of food in general, like the use of fire or that drying and covering food makes it last much longer. Their tolerance for food with strong unpleasant flavors would have been much higher than yours or mine and they would have had knowledge on how to test potentially dangerous substances to see how edible they are. If you stored milk in a stomach, it would coagulate very quickly. The substance would be solid: something you can dry! Aha. This could be a good way to store surplus milk. Early homo sapiens were pretty smart and had skills few of us today possess.