Stir-Up Sunday: the Date, and What the Supermarkets Do With It
The collect for the day launched a million puddings. Retailers noticed.
The Liturgical Calendar and a Floating Date
Stir-up Sunday falls on the last Sunday before Advent — which means it moves. Advent begins on the Sunday nearest to 30 November, making the first Sunday of Advent anywhere between 27 November and 3 December. The Sunday before it therefore lands between 20 and 26 November, depending on the year. In 2024 it fell on 24 November; in 2025 it falls on 23 November.
The name has nothing to do with stirring a pudding, at least not originally. It comes from the opening words of the Book of Common Prayer collect appointed for that Sunday: Stir up, we beseech thee, O Lord, the wills of thy faithful people. The cooking association came later — a piece of folk wordplay that stuck so firmly it displaced the theological meaning almost entirely. By the Victorian period, the day was understood domestically as the proper moment to mix the Christmas pudding, giving it the four or five weeks it needs to mature before Christmas.
The logic of the timing is practical as well as traditional. A pudding made on Stir-up Sunday and fed periodically with spirit through November arrives at Christmas genuinely improved: the dried fruit softens further, the alcohol distributes evenly, and the flavour deepens in ways that a pudding made a week before cannot replicate.
What the Supermarkets Do With It
Once a date enters the cultural calendar, retailers follow. Waitrose has for several years used Stir-up Sunday as a seasonal hook for in-store events and online tutorials, timed to the specific day. The framing is consistent: buy the dried vine fruit and suet now, make the pudding today. The commercial motive is straightforward — a customer who commits to making a pudding from scratch in late November needs ingredients that week, not a shelf-stable finished product in December.
The approach is not confined to the premium end of the market. Supermarket recipe sites across the sector typically publish or resurface Christmas pudding content in the two weeks surrounding the date, with search traffic for the term peaking sharply in the days immediately before it, according to Google Trends data for the United Kingdom.
What the marketing does not always acknowledge is the date's variability. Campaigns fixed to a specific week can misalign with the actual Sunday by several days depending on the year. For a cook who takes the tradition seriously, the correct date is determined by the liturgical calendar, not a supermarket's content schedule. The Book of Common Prayer was there first.