- To make the pickled onions, place the sliced red onion in a bowl and add the boiling water, white wine vinegar, salt and sugar. Mix well to dissolve and set aside to marinate.
- Lightly butter two slices of white bread.
- Next, in a small ramekin mix together the mayonnaise and wholegrain mustard. Spread generously over the unbuttered sides of the white bread.
- Add the pulled lamb to one slice of bread on top of the mayonnaise mix with some crispy onions and a drizzle of mint sauce. Drain the vinegar pickling marinade and add some of the pickled onions to the sandwich.
- Finally, add a handful of rocket to the bread, place the second slice of bread on top and place in a sandwich cage. Toast for 3 to 4 minutes until golden and crisp.
- Serve immediately and enjoy!
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