Côte de boeuf with chips

Ingredients

• 1 x single rib of beef (1.2-1.4kg), from the butcher’s counter
• 1 tbsp olive oil
• 2 garlic cloves, crushed
• 4-5 sprigs of thyme, leaves only
• 4 medium floury potatoes, peeled and cut into chips
• 2 tbsp beef dripping or olive oil
• sea salt
• juice of 1⁄2 lemon
• 2 tsp Dijon mustard
• a pinch of caster sugar
• 3 tbsp extra-virgin olive oil
• 1 Little Gem lettuce, leaves separated
• 1⁄2 x 70g bag wild rocket
• 20g Parmesan cheese, finely grated