In monasteries, the basic structure of the diet was laid down by the Rule of Saint Benedict in the 7th century and tightened by Pope Benedict XII in 1336, but (as mentioned above) monks were adept at "working around" these rules. Wine was restricted to about per day, but there was no corresponding limit on beer, and, at Westminster Abbey, each monk was given an allowance of of beer per day. Meat of "four-footed animals" was prohibited altogether, year-round, for everyone but the very weak and the sick. This was circumvented in part by declaring that offal, and various processed foods such as bacon, were not meat. Secondly, Benedictine monasteries contained a room called the misericord, where the Rule of Saint Benedict did not apply, and where a large number of monks ate. Each monk would be regularly sent either to the misericord or to the refectory. When Pope Benedict XII ruled that at least half of all monks should be required to eat in the refectory on any given day, monks responded by excluding the sick and those invited to the abbot's table from the reckoning. Overall, a monk at Westminster Abbey in the late 15th century would have been allowed of bread per day; 5 eggs per day, except on Fridays and in Lent; of meat per day, four days per week (excluding Wednesday, Friday, and Saturday), except in Advent and Lent; and of fish per day, three days per week and every day during Advent and Lent. This caloric structure partly reflected the high-class status of late Medieval monasteries in England, and partly that of Westminster Abbey, which was one of the richest monasteries in the country; diets of monks in other monasteries may have been more modest.