Chicken piccata with mashed potato

Ingredients

• 4 170 g chicken breast fillets
• 1/4 cup (35g) plain flour
• 30 gram unsalted butter, plus 20 g extra
• 1/3 cup (80ml) extra virgin olive oil, plus extra to serve
• 1/3 cup (80ml) lemon juice
• 1/2 cup (125ml) salt-reduced chicken stock
• 1/4 cup (50g) capers, rinsed, drained
• 1/3 cup flat leaf parsley, chopped
• Creamy mashed potato
• 750 gram desiree potatoes, peeled, halved
• 10 gram butter
• 3/4 cup (185ml) milk, hot