First chop up the Red Potatoes and put them on to boil for 30 minutes. Dice the Green Onion while waiting.
Then, drain the potatoes and mash. I just used a hand masher and left it a little chunky.
Next, add the garlic, salt, pepper, milk, water, and Green Onion.
Combine and cook on Medium for 5 to 10 minutes stirring occasionally (watch to avoid burning). Then move to a low setting, continuing to stir occasionally for 20 minutes.
While waiting, shred the sharp cheddar. When the soup is ready, serve plain or top with cheese.