If you are looking to buy a large batch cold brew coffee maker, you have a relatively simple task; there aren't too many options on the market. The few options available are relatively similar in functionality, features, and price. The three big names are Oxo, Filtron, and Toddy. You can skip to the second half of the article for the comparison.
Cold brew is a slow preparation method because uses cold steeping. In the absence of heat, caffeine and other soluble compounds in the coffee bean extract slower. Cold brew can take up to 48 hours to make, depending on how strong you want the coffee.
To solve this problem, coffee people invented the batch cold brew coffee makers. The concept behind these devices is that you prepare a large and concentrated batch of cold brew that you use for a few days. We store the coffee concentrate in the fridge, and we dilute it with water or milk when we drink it.
The large batch coffeemakers use full immersion for the extraction because it is the most convenient method.