Whip the aquafaba

• Pour the chickpea water into a bowl.
• Beat with a hand mixer until stiff peaks form.

Make the agar syrup

• Bring the water and agar agar to a boil in a saucepan.
• Stir in the sugar and maple syrup and let it bubble.

Combine and set

• Pour the hot syrup into the meringue while beating.
• Transfer to a baking dish and smooth the top.
• Leave to set until firm.

Cut and serve

• Cut the set marshmallow into cubes and serve.