Summer allotment salad with English mustard dressing recipe | Good Food

Ingredients

• 400g new-season potatoes scrubbed
• 2 bunches of French Breakfast radishes leaves washed
• 1 red onion peeled and sliced
• 1 small cucumber peeled, deseeded and sliced into half moons
• small handful dill fronds chopped
• 100ml rapeseed oil
• 20g English mustard
• 1 tbsp white wine vinegar
• pinch of white caster sugar
• 1 tbsp mustard seeds toasted in a dry frying pan