2 medium bananas, frozen – make sure the bananas are really nice and ripe before freezing. They should have bright yellow skins with no green showing. If they have some brown spots, even better. I find it easier to remove the skins and chop into chunks before transferring to a Tupperware pot to freeze
1 large mango, frozen – again, make sure the mango is very ripe before freezing. This normally means leaving it in your fruit bowl for about 4-5 days after purchasing, until small black spots are starting to develop on the skin. You should be able to gently squeeze it with your hand. Remove the skin and chop up into rough chunks to freeze
1 can full-fat coconut milk – chill the can for at least 3 hours before making the smoothie (you can throw it in the freezer for an hour and a half instead – but don’t forget about it, as the tin may swell after too long). This will allow the coconut fat to float to the top, leaving the water underneath. Scoop off the fat (about 3 tbsp) to use in the smoothie, and keep the water for adding to curries and stews
Alt-milk, e.g. coconut or soya – you can use as much or little as you like, depending how thick you want the smoothie to be. When using frozen fruit, you will need to add at least a few tablespoons of milk to allow it to blend properly, as without it you’ll end up with lots of tiny frozen fruit chunks