On the Monday immediately preceding the Dalkeith Hiring-Fair in October (2nd Thursday of the month), Musselburgh celebrated a day known as Pie Monday.
To correctly celebrate Pie Monday everyone *must* have a hot mutton pie for tea, as simple as that.
It is meant to have started when a baker’s horse was lamed in Musselburgh as they were on the way to Dalkeith with a full cart of pies and something had to be done to prevent waste! They sold so well that the following year he was sold out before getting to Dalkeith and so it became a yearly tradition.
Musselburgh let it fall by the wayside and no longer celebrate hot mutton pies in October. They should sort that out!
Source
Stirling, R. McD. (1894) Inveresk Parish Lore from Pagan Times. T.C. Blair, Musselburgh. 284pp.