Foil-Poached Salmon with Herb Mayonnaise, Spring Greens and New Potatoes - Lavender and Lovage

Ingredients

• 2 to 2.5kg whole organic salmon
• a little olive oil
• 1 onion, peeled and sliced into rings
• 1 lemon, sliced
• 2 bay leaves
• 100mls dry white wine
• 125mls mayonnaise (home-made or organic)
• 20g t0 30g fresh chopped herbs (I used dill, parsley and chives)
• watercress or lamb's lettuce leaves (to garnish)
• cucumber, sliced (to garnish)
• parsley (to garnish)
• lemon wedges (to serve)
• 900g new potatoes (scrubbed and cut in half if large)
• handful fresh mint (half of the mint chopped, leave some sprigs whole to add to the potatoes whilst they boil)
• 25g butter
• 650g spring greens (or cabbage, chard, spinach)
• zest and juice of 1 large orange
• 40g butter