Cut all into small pieces, one bowl each, set aside and reserve.
Take the butter and melt it in a large pot.
While the butter is melting, put another pot into carrots, onions, and celery. (No need to put oil and stir fry) Stir fry for a while and put in the potatoes, continue to stir fry. Then pour in the simmered juice and add water that has not been vegetabled. After the fire is boiled, turn off the heat and continue to be boring.
Pour the melted butter into the flour and mix well. This should be a viscous liquid. Then pour the cream into the amount and stir while stirring.
After mixing well, pour in the vegetable pot that you just prepared. Continue to stir, keep the medium fire, do not boil.
Pour in the meat. Pour in salt, black pepper, red wine vinegar to taste. Stir well and then.