At my shop, we pride ourselves on making some outstanding cold brew (or cold press as we call it in Minnesota). We have found certain keys to creating a great cup. First of all, we use the same origins and roasts on each batch, and we make sure we use the freshest coffee we have. By doing this you will always have a consistent flavor and it's easier to make adjustments once you have a baseline. I like to let our course ground coffee steep in cold water for at least 14 hours and as much as 24 hours - depending on our needs. Next, do you want a concentrate that you will need to cut with water or do you want it to be RTD (ready to drink)? We elected to go with a concentrate that we don't cut with water so it's very bold. It costs more but so worth it. It's not a full-blown concentrate but pretty close. Once you find the right ratio for your taste, then you can play with the brew time, the water you use, etc. Matter of fact, I always thought our cold brew couldn't get any better until the day we switched to a tree-free PLA filter from Brewista. Once we started using these filters our cold brew went up to a whole new level. I realized that the sediment coming through the old paper filters was really affecting the taste. Brewista makes their Cold Pro toddy systems and you should check them out. They are really well thought out. So again, experimentation led me to a flavor that I thought couldn't get any better. In this case, it turned out to be a simple filter change that took my cold brew to the next level! Happy brewing -Van