Uncle Jon's Mashed Potatoes

Directions

1. 1
   Saute the onion, shallots and garlic in 1 Tablespoon butter until starting to caramelize.
2. 2
   In the meantime boil potatoes until soft.
3. 3
   Drain and mash the potatoes with a mixer or potato masher.
4. 4
   Add the remaining 3 Tablespoons butter until melted.
5. 5
   Add the onion mixture,.
6. 6
   Start adding milk until the potatoes are the right consistency.
7. 7
   Taste for salt and pepper; add the horseradish.
8. 8
   Taste and add more butter, salt and pepper, or horseradish as needed.