Yes, it is the best natural way to descale. Over time, calcium and magnesium from your water build up inside the heating tubes. Running a cycle with a 50/50 mix of white vinegar and water dissolves these minerals, improving the machine’s speed and the taste of your coffee. After the vinegar cycle, you must run at least 2 or 3 cycles of plain, fresh water. It’s possible the vinegar loosed but didn’t completely remove alkaline build-up. Flushing the coffee maker is the final touch to get it completely clean and to ensure no vinegar scent remains in your morning brew!