WINONA, Minn. – Firefighters ventilated an East Side house after an oven fire. The homeowner said she had two pans of potatoes, onions and garlic in the oven. When she opened the oven to check on the food, flames burst out, she said. She closed the door, shut the oven off, and called 911. Firefighters tentatively blamed a viscous liquid on the bottom of the oven. Nobody was injured, but the house, in the 500 block of East Wabasha Street, was filled with a haze. The menu for dinner was changed. The fire was about 1:40 p.m.