In a large pan heat your oil. Then coat your meat in the flour and pan fry on both sides in the hot up for about 2-3 minutes each side. 

Remove the meat and set aside. 

Add the onions to the pan and then deglaze with the water. Scrape all the good bits left behind by the meat on bottom of pan and mix in with the onions. 

Then add the potatoes on top and season with salt and pepper.

As the the onions and potatoes cook for a little…

Mix the meat with the mayo, and both horseradish well. Make sure to coat the meat well. 

Then throw that mixture into the pan over the potatoes and spread out with a spatula. 

Cover the pan and place into a 350F oven for about 1 hour.

After an hour, remove the cover and let the meat continue to cook for an additional 30 minutes. 

Then eat!