We just replaced a 20-plus year old Bunn drip coffee maker. We replaced it with a VPR-VPS coffee maker, pour-over style with 2 warmers. The dispenser (carafes) are 12-cup capacity. If we make a smaller batch (i.e. 6 cups) will this cause a problem with the next full batch? Our old maker would sometimes either overflow or short the next full batch.
PCK in Washington
The syphon system will work fine with a 32 ounce (half-batch) brew. I would not suggest less than that. You biggest issue will be the short contact time with the reduced volume. If you are grinding your coffee, you may try a slightly finer grind when brewing the half-bath or a little more than half of the full weight.