Mini Vintage Hand Cranked Coffee Bean Mill Manual Coffee Grinder for Household Use Item Type: Coffee Grinder Material: Pine + Cast Iron + Ceramic Grinding Core: Internal ceramic core Color: As shown in the picture Weight: Approx. 403g / 14.2oz Function: Coffee grinder Cup: About 2-3cup Instructions for Coffee Bean Grinding Adjustment: 1. There are three types of ground coffee powder: coarse, medium and fine. 2. The user rotates the adjusting plate up or down according to the required degree. When the upper thick, the lower fine, and the bottom are adjusted to the bottom, a gap of 0.25mm should be left to avoid increased friction or jamming. 3. When the adjusting piece is adjusted, install the clasp and other accessories to work. Tips for Grinding Coffee Beans: 1. Coffee beans that are ground before brewing can best release the aroma of coffee, so the most ideal time to grind coffee is before brewing coffee. 2. The ground coffee is easy to oxidize and lose its aroma, especially if the coffee powder is not properly stored, the coffee powder is also easy to taste, and naturally it is not possible to brew a fragrant coffee. 3. It is recommended that you use a grinder to grind, not to grind too much at a time, just enough for one use, because the longer the grinder is used at a time, the more likely it is to heat up, which indirectly causes the coffee beans to be heated during the grinding process As a result, the aroma is released ahead of time, which will affect the aroma of the brewed coffee.