I'm pretty new to brewing (almost a year) and currently I only do extract brewing. My question is regarding hops. I use a hop sack and add hops at the appropriate times during the boil. My question is when should I take the hops out or should I leave them in throughout fermentation...

I'm pretty new to brewing and have a question about late additions. I notice in recipes sometimes various ingredients are designated as "late addition". In general my question is at what time is "late addition" and also what is the purpose of being a late addition. In addition I've seen an...