You can buy wasabi mayonnaise online at www.thewasabicompany.co.uk, or alternatively mix 2 tsp of creamed horseradish with 3 tbsp of mayonnaise
Prep time: 10 minutes Makes 8 quarter-size bagels
2 bagels, cut in half and lightly toasted
4 tbsp wasabi mayonnaise
200g rare roast beef (cooked to taste), thinly sliced
Good handful watercress
Spread the toasted bagels with wasabi mayo. Layer on the slices of beef before topping generously with watercress.
To serve, cut each bagel into quarters and arrange on a serving plate.