Bbq Sausage Kabobs

• 8 potatoes (new)
• 2 bratwurst links (fresh)
• 2 mild italian sausage links (fresh)
• 2 polish sausage links (fresh)
• 120 ml beer
• 120 ml water
• 40 gr onion (chopped)
• 34 gr green bell pepper (chopped)
• 30 ml vinegar
• 8 gr flour