Foolproof Vegan Choc Chunk Cookies

ground flax seed + 3 tbsp water (note 1)

(c.4½ oz) vegan butter, softened (or use 100g (c.3½ oz) coconut oil)

(c.5¼ oz) palm sugar

plain/all-purpose flour (note 2)

baking soda (note 2)

sea salt, to taste

(c.5¼ oz) vegan chocolate, broken into chunks (note 4)

cookie sheet or baking tray

parchment paper or a silicone mat