
Lol. If they were infected blisters, you'd be saying different...
(Medical Science)
The fluid that collects in blisters, known as serous fluid, is mostly water. You will also find traces of protiens, electrolytes, antibodies and other products of your bloodstream and lymphatic system. It's there to mitigate inflammation and prevent infection or fight it if necessary. (/Medical Science)
...In short, yeah, probably not very tasty alone. Mix it with Jagermeister for a custom-tailored immunity cocktail!