Vegan Chocolate Orange Tart

For the shortcrust pastry:

• 215 g all-purpose flour
• 135 g vegan margarine
• 15 g icing sugar
• 1 Tablespoon water ice cold

For the chocolate filling:

• 500 g dark chocolate vegan orange chocolate or semi-sweet dark chocolate
• 2 Teaspoons orange extract (only use this if not using orange-flavoured chocolate)
• 310 ml soya cream (or full-fat coconut milk)

To top (optional):

• orange zest of 1 small