Bread is a
food item, baked and sold by Baker merchants. All types of bread are worth 20-24c (Lvl 3 Commerce).
Bloomer loaf ( cal count info needed)
Baguette (400 calories)
Ring loaf (450 calories)
Cob loaf (500 calories)
Cottage loaf (600 calories)
Bread can rot overtime, but much slower than meat and fruits.
Other than having different names, there is no discernible difference between the different types of bread. Identifying them purposely is therefore not recommended.
For a similar cost, it makes sense to buy bread with the highest calorie value.
Revive your bread by selling it to a shop vendor, not a Baker. You will have to buy it back at its regular price, but it will be fresh.
[as of v1.3] Bread can be polymorphed to and from equipment! This can be very useful with the Polymorph spell (or wand, to a lesser degree). Each type of bread will consistently change into a different category of equipment, as follows: