Not a beer that I drink very often. Not that I don't enjoy it, it's just not one that I readily see around here, although it's one of the more well-known 'abbey' style Belgian Beers.
The Abbey for which this beer is named was founded around 1152. Many Abbeys developed breweries, one reason being that beer was in fact safer to drink than water back in the middle ages.
After the Abbey and brewery burnt down in the 1700's beer production ceased. However, brewing of Leffe was restarted on a commercial basis in 1952, and has been going ever since, although now brewed at the Stella Artois brewery in Leuven.
It has a delicate, malty aroma and a subtle, sweet finish. The head is creamy, and the beer is a light golden color. 6.6% ABV.