List of edible disasters:

Alcohol:

London Beer Flood
Dublin whiskey fire

Animals:

exploding whale (many)
Rasdorf cow methane explosion [1]

Cheese:

2013 Norwegian cheese fire (Narvik) [2]

Grain and starch:

Douglas Starch Works explosion [3]
Great Mill Disaster (Washburn)
1972 Tapioca time bomb (Cardiff) [4]

Meat:

Kentucky meat shower
Imperial Foods chicken plant fire

Molasses:

Great Molasses Flood (Boston)
Honolulu molasses flood [5]