It's a surprisomg amount of Guinness, basically a full can 👀🤔I think 

 Lolmg I bought a 19 oz can and used most of it. I actually didnt measure it out but gave it a good chefestimate lol The alcohol burns off with the heat then you just have the rich flavor 🤌 

 I just didn't think it would be that much, but it's the main liquid. I thought it would be more like adding wine for flavour to a sauce. But it is the sauce lol 

 I was just watching Marco Pierre White doing his version on YouTube, but I think I'll try yours instead lol 

 thank you  

 Thank you!