OPTIONAL up to ¾ cup (180 mls)plant milk(the pudding is thick & fudgy without any milk)
First cook the sweet potato. Roast, steam or microwave. I don't recommend boiling it because it gets too watery. You can do this part up to 3 days in advance then store the cooked potato in the fridge. To roast (my preferred method for best flavour) - Preheat oven to 425°F (220°C). Cut each potato in half lengthways and roast cut side down on a baking tray lined with a silicone baking mat or lightly oiled parchment paper. Time will vary depending on the size of the potatoes but allow roughly 30 minutes. To microwave - Pierce potatoes a few times with a fork. Cook in the microwave on full powder until soft. Time will vary depending on the size of the potatoes. Usually 5 to 7 minutes. To steam - Peel potatoes and cube. Place in a steamer basket and steam until tender. About 10 minutes.
Once cool enough to handle, scoop the sweet potato out of its skin and into a food processor or high speed blender.
Add the other ingredients and blend until smooth, light and airy. Start with the smaller amount of cocoa powder, blend it all up then taste and add more, blending after each addition, as necessary. I like to add the max amount for a nice rich, dark chocolate flavour. The pudding will thicken quite a bit in the fridge to an almost fudgy texture. Feel free to add up to ¾ cup of plant milk if you prefer a looser pudding.
Taste and adjust the sweetness if required then spoon into dessert bowls or glasses. Refrigerate for at least 30 minutes or up to 4 days.
Store leftover pudding in the refrigerator for up to 4 days. I do not recommend freezing it.