Instruction: Answer the given question using the supporting document.

Input:
Question: What is the appropriate grind for this coffee maker?
Document: First of all, the reason we bought this is because, in general, percolators make great tasting coffee. They can turn even the worst quality beans into a good cup of coffee. Initially, the Presto lived up to our expectations. And after doing the following, it is once again making great cups of coffee.Tip #1 - Grind your coffee using the appropriate setting.After some usage, we would at times get a mouthful of grinds.
Before purchasing this Presto percolator nearly everything in my 1954 kitchen was period appropriate with one glaring exception, my drip coffee maker. After doing quite a bit of research I quickly settled on the Presto as it has not only the most authentic looking classic coffee pot design, but also the best ratings.It may take you a pot or two to get the hang of using a percolator but once you have it I think you'll be impressed.
It's not for everyone, but I love percolated coffee. The coffee maker will make a good pot of coffee consistently, and it keeps it hot.Make sure you use a coarse grind or you will have grinds in your cup. That's just the nature of using a percolator,
Bought this for my mom for Christmas - She loves it. Makes coffee slower than an auto-drip coffee maker but the taste of perked coffee is much better than coffee made with the usual auto-drip coffeemaker. Mom uses it with the same grind coffee she used with her auto-drip coffeemaker and it works fine.
Our old coffee maker (Cuisineart DGB-300) made great-tasting coffee that was full-bodied and flavorful without bitterness. Unfortunately, that unit bit the dust after about 4 years. Having had success with this Cuisineart, we decided to give one of the newer models a try (DC1250 grind and brew model from Sam's Club).
I returned the DC1250 and continued my search for a decent coffee maker under $100.I ended up getting the Presto based on feedback from other Amazon reviews. The first week was pretty disappointing (a lot of experimenting with grind coarseness and amounts), tasted very much like the Cuisineart DC1250 -- the flavor was all over the place, sometimes bitter, other times too weak.
I was looking for a coffee pot that was all stainless steel and had no plastic inside. This one is perfect and makes great coffee. It doesn't take any longer than a drip coffee maker and it comes out hotter when finished. To avoid getting grounds in your coffee you can either use a filter or just grind the coffee more coarsely, which is what I do. I would highly recommend this coffee maker to anyone.
I bought this to replace my drip coffee maker that died a few days ago and all I can say is wow, this thing makes some great coffee. Caution, the coffee is very HOT which is a real bonus for me. I grind my own beans and used the exact same amount that I use with a drip pot. The difference is a piping hot cup of coffee that has a smooth robust taste.
The all stainless design is a good feature. I also find that it produces hotter coffee than I could get from my previous drip type coffee maker. It can be used with or without filters  (some of which are included with the coffee pot). I find it's just fine without filters as long as the grind of coffee isn't too fine. Overall, I am quite pleased with this coffee pot thus far.
we've had this coffee maker for a couple of months now and have been completely satisfied. it makes great tasting HOT coffee and plenty of it. i know the coffee snobs out there turn their noses up at percolators but that's their problem. maybe it's the coffee they buy. we buy whole bean, grind it ourselves, and i think our coffee is as good as or better than most anything you can buy at a restaurant or coffee shop. the trick is to keep the coffee maker CLEAN.
Answer: I think a medium grind works best.  Too fine a grind will plug the very small holes in the basket and affect the taste of the coffee and the performance of the percolator.