Beef Medallions with Fresh Horseradish Cream

Ingredients

2 tbsp vegetable oil for frying
4 pieces (about 3-oz each) beef top sirloin, pounded into 1/4-inch thick medallions
salt, pepper, and cayenne to taste
flour as needed
2 cups cherry tomatoes, quartered
1 tbsp rice vinegar
1/2 tsp salt
1/4 tsp sugar
freshly ground black pepper to taste
For the horseradish cream:
1/3 cup crème fraiche
2 tbsp freshly, finely grated horseradish root
pinch of salt