How do I know what type of grinder to use? Nina Lichtman February 17, 2017 18:14 Follow It depends on which brewer you use. For example, if you use a French press you need to use a grinder that has a coarse option. For more info check out this guide. Related articles How do I make cold brew?? How much water should I use? What brewers can I use with your coffees? Comments 0 comments Please sign in to leave a comment.