Roasted Boniato and Lime Dip

Name: Roasted Boniato and Lime Dip
Prep time: 10 min
Cook time: 45 min
Total time: 55 min
Yield: 6 servings
Cuisine: Caribbean
Ingredients: 1½ lb (680 g) boniato (Caribbean sweet potato), scrubbed clean, halved lengthwise; ½ cup (120 ml) sour cream, room temperature; 3 tbsp (45 ml) fresh lime juice, freshly squeezed; ¼ cup (10 g) fresh cilantro, finely chopped; ½ tsp (2½ g) ground cumin; ½ tsp (3 g) kosher salt; ⅛ tsp (½ g) cayenne pepper (optional); 1 tbsp (15 ml) olive oil

From the MyKitchenBank Kitchen

A silky, vibrant dip featuring roasted boniato (Caribbean sweet potato) whipped with bright lime juice, fresh cilantro, and warm cumin. The natural sweetness of boniato is balanced by citrus and depth from sour cream, creating a versatile dip that works with chips, crudités, or as a spread. Finished with a whisper of cayenne for warmth without heat.

Prep: 10 min
Cook: 45 min
Wait: 15 min
Total: 1 hr 10 min
Makes: About 1½ cups (360 ml)

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Steps

Before you start

Preheat your oven to 400°F (200°C)
Choose firm boniatos without soft spots—they should smell sweet and earthy
Have all ingredients measured and cilantro chopped before roasting begins

1
Roast the boniatoOven 400°F / 205°C
- Place the halved boniatos cut-side down on a parchment-lined baking sheet.
- Drizzle lightly with ½ tbsp (8 ml) of the olive oil and season the cut sides with a pinch of salt.
- Roast at 400°F (200°C) for 40–45 minutes, until the flesh is completely tender when pierced with a fork and the edges begin to caramelize slightly.
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Ready when: Flesh is soft throughout and pierces easily; edges are slightly browned
Tip: Do not skip roasting—it concentrates the natural sweetness and creates a deeper, more complex flavor than boiling
2
Cool and scoop
- Remove the boniatos from the oven and let them cool for 10–15 minutes at room temperature until comfortable to handle.
- Once cool enough, use a spoon to scoop the soft flesh away from the skin.
- You should have about 1½ cups (360 g) of roasted flesh.
- Discard the skin.
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Ready when: Flesh separates easily from skin with a spoon
Tip: Don't rush cooling—cold boniato is harder to scoop and more likely to break apart
3
Combine and whip
- In a medium mixing bowl, combine the scooped boniato, sour cream, lime juice, cilantro, cumin, salt, and cayenne (if using).
- Using a fork or potato masher, mash the mixture until smooth, about 1–2 minutes of vigorous stirring.
- The texture should be creamy and spreadable, with no large lumps of boniato remaining.
- Taste and adjust salt or lime juice as needed.
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Ready when: Mixture is smooth, creamy, and uniformly combined with no lumps
Tip: Do not overmix with an electric blender—it can make the dip gluey and pasty. A fork or masher gives better texture
4
Finish and serve
- Transfer the dip to a serving bowl.
- Drizzle the remaining ½ tbsp (8 ml) of olive oil over the top and garnish with a small pinch of cumin or a few cilantro leaves if desired.
- Serve at room temperature or chilled, with tortilla chips, plantain chips, or fresh vegetables for dipping.
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Tip: If the dip seems too thick, whisk in 1 tbsp (15 ml) of sour cream or lime juice at a time until you reach the desired consistency

Good to know

Tips

Boniato is milder and less fibrous than orange sweet potato, with a creamy texture that makes this dip silky. If you can't find boniato at your regular market, check Caribbean or Latin American grocers—they're becoming more widely available.
Fresh lime juice is essential; bottled will make the dip taste flat. One medium lime yields about 2–3 tbsp of juice.
This dip is naturally sweet, so the lime juice and sour cream provide critical balance. Don't skip either one, and always taste before serving.
For a firmer dip that holds its shape better as a spread, reduce the sour cream to ¼ cup (60 ml) and add an extra tbsp (15 ml) of lime juice for moisture.

Make ahead

This dip can be made up to 2 days ahead. Combine all ingredients, cover tightly, and refrigerate. Let it come to room temperature or serve chilled; stir gently before serving. The flavor deepens slightly as it sits overnight.

Storage & reheating

Room temperature (covered): up to 2 hours. Refrigerator (in an airtight container): up to 4 days. Freezer: up to 3 months (thaw overnight in the refrigerator and stir well before serving; texture may be slightly watery, so drain excess liquid if needed). Reheat gently in a small bowl set over warm water if serving warm.

Substitutions

boniato (Caribbean sweet potato) → Orange-fleshed sweet potato or yam. Use the same weight. Sweet potato will be slightly less dense and earthy; yam will be starchier. Both work well and roast in the same time.
sour cream → Greek yogurt (plain, full-fat). Use the same amount. The dip will be slightly tangier and a touch lighter in texture. Choose full-fat yogurt for best results.
fresh cilantro → Fresh mint or flat-leaf parsley. Use the same amount. Mint adds a cool brightness; parsley is more subtle. Adjust to your preference.
ground cumin → Ground coriander or a pinch of smoked paprika. Use ½ tsp (2.5 g) of coriander for a citrus note, or ¼ tsp (0.5 g) smoked paprika for depth. Both are more delicate than cumin.