Stocks and liquid infusions in a ziplock?

jsdaly

Hello all,
   
I have a question about the sous vide stock and infusion recipes in the modernist book. Can these be successfully executed in a zip lock bag or does the vacuum effect of the chamber machine make a big difference in the final product? I suppose I could freeze the water for the stock recipes and use my food saver but most of the infusions are done in alcohol. Also what pressure cookers are recommended for the home cook?

Thanks!

Chris_Young_80640

@Joanathan_Daly ziplock-style bags are fine.