Step 1
Thread the beef onto 8 skewers together with the shallots, courgettes and red peppers. Season with salt, black pepper, oil and balsamic or wine vinegar.
Step 2
Combine the tomato ketchup, Worcestershire sauce and Tabasco with the shallots, tarragon, oil and wine vinegar. Season to taste and set aside.
Step 3
Cook the kebabs on a barbecue if possible. If not, griddle the kebabs over a hot heat for 3-6 minutes on each side.
Step 4
Serve along with the dressing and warm baby new potatoes.