Dice the onion and gammon, chop the garlic and chilly than simmer in olive oil until softened, now add the sugar tomato concentrate mix well. Once the sugar starts to caramelize pour in the vodka and simmer until the alcohol evaporates. Pour in the cream and simmer until thickened, meanwhile boil the penne in salted boiling water and add the pasta al dente to the sauce, simmer with the pasta in and add some water used to boil the pasta if sauce is too dry.