Asparagus, pea and goat's cheese tart

Ingredients

• 200 g unsalted butter, chilled, 1 cm cubes
• 250 g plain flour
• 125 ml sour cream
• 1 tbsp olive oil
• 1 shallot, finely sliced
• 2 garlic cloves, crushed
• 2 bunches asparagus, sliced 5 mm thick
• 100 g peas, frozen or fresh
• ½ bunch chives, finely sliced
• Salt, to taste
• Pepper, to taste
• 100 g goat’s cheese, crumbled
• 3 eggs
• 125 ml milk
• 125 ml cream
• 50 g parmesan, finely grated