Cut the bacon into strips. Peel and chop onions. Carve tomatoes crosswise, blanch with boiling water and peel the skin. Dice the tomatoes. Drain the corn.
Heat the oil in a pan and fry the bacon until crispy. Add the onions and sauté. Add tomatoes, corn and beans to the pan. Heat everything while stirring occasionally. Season with stock, salt, pepper and paprika.
Wash and chop the parsley and sprinkle over the pan. White bread tastes good with it.