Area of production
Bacon has various origins and variants. The British bacon offering is generally streaky (made from pork belly) or back bacon. In the United States, the term bacon refers exclusively to the belly cut. Moreover, in the US, bacon may be cold or hot smoked, but invariably smoked. There is no consortium to certify smoked bacon but there are many craft producers. For the purposes of this article, we shall be referring to American-style bacon.
Instead, the Speck Consortium - Consorzio Tutela Speck Alto Adige - gathers 29 producers. South Tyrol is the Italian region on the border with Austria whose 300 days of sunshine a year make it a very favourable area of production. 'PGI Speck Alto Adige' may only be produced in the area of the autonomous province of Bolzano–Alto Adige (South Tyrol).
Processing
Bacon is subject to dry processing: described as dry cured, it is carried out by sprinkling the piece of meat with a mixture of salt and spices, allowing enough time for the salt to penetrate the meat and dehydrate it. Alternatively, it is wet-cured in brine, by immersing the meat in a mixture of water, salt and spices. Then the bacon may take one of two different directions: it may either be smoked or unsmoked. The smoked variant is the one which most closely resembles speck.
In the production of speck, the pork leg is rounded at the tip, trimmed and cleaned. Then it is placed in a tub of brine with flavourings and additives where it stands for about 15 days, during which time it is turned over repeatedly. After the brining process, the speck undergoes two alternate phases: smoking and air-drying.
Smoking
Normally, the smoking process of bacon takes place over a fire of apple wood, which is not so thick as oak or cedar wood. The temperatures used for bacon are higher than those of speck and have to reach 60 degrees at the centre of the cured meat.
The smoking process of speck is lighter and can only be carried out using wood that is not particularly resinous. The beech wood fumes used for smoking should never exceed 20 degrees centigrade. In this way, the smoke can penetrate the ham pores which would otherwise close at higher temperatures.