Sweet Potato and Kahlua Ice Cream (#44)

10 01 2013

Ahhh, sweet potatoes!  Packed with anti-oxidants, vitamins, minerals, and fibre, these bad boys are one of my favourite superfoods.  They were on sale last week, so I bought a big pile.


Sweet potatoes are one of my favourite superfoods.

I baked the sweet potatoes with every intention of eating them plain as I usually do, but then I thought, hey, why not incorporate them into this week’s ice cream recipe?  I’ve tried a few veggie ice cream recipes now — Mint and Peas Ice Cream, Carrot Cake Ice Cream, and Beet and Orange Ice Cream — so Sweet Potato Ice Cream should hardly be considered weird!

Baked sweet potato, baked yam

Fresh out of the oven and oozing with sweetness!

So I peeled them, tipped them into the blender, and stirred the silky orange puree into a basic custard along with a few spoonfuls of Kahlua.  Results?  This was an interesting one.  The taste of the sweet potato and the Kahlua were both fairly subtle, emerging only after the third or fourth bite.  As with the Beet and Orange Ice Cream, I found I really had to focus to figure out what flavours I was tasting.  The ice cream was also surprisingly not very sweet, considering I used my standard 3/4 cup of sugar and also had the natural sugars in the sweet potatoes.  Depending on your tastes, you might want to the increase the sugar to 1 cup or give the ice cream an extra drizzle of Kahlua or maple syrup.

Sweet Potato and Kahlua Ice Cream (makes about 1.5 L)

3 medium or 5 small orange sweet potatoes (enough to yield 1.5 cups of baked sweet potato puree)
3 cups half-and-half cream
2 eggs
3/4 cup brown sugar
Pinch of sea salt
2 tablespoons Kahlua liqueur

  1. Preheat the oven to 400 degrees F.  Scrub the sweet potatoes under cold running water.  Prick the potatoes a few times to let steam release while baking.  Place the potatoes on a baking sheet and bake for 45 minutes to 1 hour or until soft when pierced with a fork.  Let cool.
  2. Peel the skin off the sweet potatoes.  Tip the potatoes into a blender and puree until smooth.  Measure out 1.5 cups of puree.  Set aside.
  3. In a heavy saucepan, lightly whisk together the eggs and sugar.
  4. Add 2 cups of the half-and-half cream and the salt.
  5. Cook the mixture over medium-low heat stirring constantly, until the mixture is thick enough to coat the back of a wooden spoon (170 degrees F / 77 degrees C).
  6. Remove from heat immediately and add the remaining cup of the half-and-half to stop the cooking.  Place the saucepan into an ice bath to cool the custard rapidly.
  7. When the custard is cool, whisk in the sweet potato puree and the Kahlua.
  8. Chill overnight in the fridge.
  9. Pour the custard into an ice cream maker and prepare according to the manufacturer’s instructions.
Sweet potato and kahlua ice cream, sweet potato pie ice cream

The Official Taster says: “This is a slow-release taste ice cream. “


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