One of the brands that's been most heavily promoted this Christmas - as it is most Christmasses - is the Irish cream liqueur Baileys.
The discounts look impressive admittedly. Tesco is selling it at £9.97 and Sainsbury's at £11 instead of £12.79 but given that it's only about 17% ABV you wonder why it costs that much in the first place.
For £9 you can buy a litre of Sainsbury's very decent (if you like this sort of thing) Taste the Difference Irish Cream Liqueur while Aldi is selling its own 'Specially Selected' Irish Cream Liqueur for just £4.99 which I thought was pretty good when I tried it this week - rich, creamy and caramelly with a good belt of whiskey. Serve it over ice and I doubt if anyone would notice.