Meat and Wine at the Mourning Meal

Is it permitted to eat meat and drink wine at the mourning meal?

At the mourning meal, as well as during all the days of shiva (except before the burial when one is considered an onen), it is permitted to eat meat and drink a little wine during the meal to aid digestion, but not to become intoxicated.

It is stated in Ketubot, page 8b: "The sages instituted ten cups in the house of mourning: three before the meal to open the stomach, three during the meal to aid digestion, and four after the meal — one corresponding to the nourisher, one for the blessing of the land, one for the builder of Jerusalem, and one for the good and beneficent; they added four more — one for the city's attendants, one for the city's leaders, one for the Temple, and one for Rabban Gamliel. They began to drink and become intoxicated, and they returned the matter to its original state. (Regarding the ten cups)". It is written in Beit Yosef that this custom is not practiced. The Shulchan Aruch, Yoreh De'ah, laws of mourning, chapter 378, paragraph 8, also rules: "Once the deceased is buried, it is permitted to eat meat and drink a little wine during the meal to aid digestion, but not to quench thirst."