I'm a cold brew aficionado. I have tried several products to make my own cold brew rather than getting store-bought cold brew and they have all failed and have been returned. Until now. I have had the large Takeya cold brew maker for less than two weeks, but I can tell you, this one is a keeper. I have already made about 10 batches and I'm now having fun trying different coffees. Right now, I am trying 2 blends and comparing.My process is simple, I fill up the pot with filtered water to about an inch from the bottom of the white rim. I load up the filter with coffee ground coarse to the top of the filter. I attach the extension and then the lid, and slowly dunk the filter in the water. I tighten everything and swirl the water around for a minute or two to wet the coffee. Don't shake too hard or tip it around, well, unless you like grounds in your coffee.I leave the Takeya on the counter for the day, swirling it one in a while. At night, I place it in the refrigerator and the next morning I transfer to cold brew to another jar, clean up the Takeya and either make another batch right away or just put it away until the next time. Usually, I start another batch because it doesn't last long.The clean up is pretty quick. I dump most of the grounds directly in the garbage. I know some people use the grounds for other purposes, I don't, but I also don't put them in the garbage disposal. I then clean and dry all the parts with soap and water, rinse, dry and assemble.My observations:1- The extension is sometimes finicky to connect to the filter.2- I'm not sure how sturdy the actual filter fabric is and I treat it very cautiously. Thankfully, it's not an expensive unit and it's made of plastic so it shouldn't shatter.3- Sometimes find a small amount of residue at the bottom, but since I've only been swirling and not shaking, that seems to have mostly gone away. I have had batches with no residue whatsoever. Just gotta be diligent.4- It's actually pretty neat to see the coffee permeate the water over a few hours. I go for about 22-24 hours because I really like my coffee.Highly recommended. Make sure you start with good water and coarse coffee.Update June 2022. I have been using the device every day since I bought it. It's solid and has stood up well. I now brew the coffee for 48 hours. The first 24 hr sees the coffee maker sitting on the counter. It then goes in the fridge for the next 24 hrs. I use very coarse ground coffee from the supermarket. I've tried different roasts and types and I have settled on dark French roast. I fill the maker up to about an inch from the top, put in coffee to fill the basket up to the start of the extension. This works well for me.