Good review of the county of Osana here from Barcelona writing.
On food of Osona
Pork and its by-products may be the most emblematic food of the county, but Osona has much else to offer gastronomes. The truffle (trufa), a black mushroom that grows underground and is highly prized, and a wide range of bolets (Catalan mushrooms) including pinetell, rovelló, rossinyol, cep and fredolic are found locally, as are the white beans (mongetes) of the Collsacabra Mountains, characterised by their small size. For dessert, the pa de pessic de Vic (sponge cake) is worth trying as are the regional cheeses, curds, honey and jam.