Charred Asparagus Harissa Hot Sauce with Smoked Preserved Lemon

Ingredients

• ▸500 g asparagus, woody ends snapped off
• ▸6 whole dried guajillo chiles, stems and seeds removed
• ▸4 whole dried árbol chiles, stems removed
• ▸3 whole dried ancho chiles, stems and seeds removed
• ▸1 whole preserved lemon, rind only, roughly chopped
• ▸4 cloves garlic, smashed
• ▸1 small red onion, quartered
• ▸2 tsp cumin seeds, toasted
• ▸1 tsp coriander seeds, toasted
• ▸1 tsp smoked paprika
• ▸0.5 tsp caraway seeds, toasted
• ▸0.25 tsp ground cinnamon
• ▸3 tbsp olive oil, plus more for smoking
• ▸2 tbsp apple cider vinegar
• ▸1 tbsp tomato paste
• ▸1 tsp rose water
• ▸0.5 tsp sea salt, or to taste
• ▸120 ml water, or as needed for blending
• ▸1 small handful fresh cilantro, leaves and tender stems
• ▸1 cup wood chips (applewood or cherry), soaked 30 minutes

Instructions

1. 1

   1. Set up your smoker or a stovetop smoker (a deep wok with a tight lid works brilliantly) to run at 120–135°C (250–275°F). Drain your soaked wood chips and place them in the smoker box or directly on foil over low heat in the wok.

2. 2

   2. Toss the asparagus spears and quartered red onion with a thin film of olive oil and a pinch of salt. Arrange them on the smoker rack in a single layer. Smoke for 20 minutes until the asparagus turns deeply green and slightly limp, with wisps of smoke perfume clinging to every ridge.

3. 3

   3. Crank the heat to high (or fire up a grill or broiler to max). Char the smoked asparagus and onion aggressively — you want genuine blackened patches on at least 30% of the surface. This is not a mistake; it is the point. Set aside to cool slightly.

4. 4

   4. While the asparagus chars, toast the guajillo, árbol, and ancho chiles in a dry skillet over medium heat for 30–45 seconds per side until fragrant and pliable. Transfer immediately to a bowl, cover with boiling water, and soak for 15 minutes. Drain, reserving 60 ml of the soaking liquid.

5. 5

   5. In the same dry skillet, bloom the cumin seeds, coriander seeds, and caraway seeds over medium heat for 60 seconds until popping and aromatic. Transfer to a spice grinder or mortar and grind to a coarse powder. Add the smoked paprika and cinnamon and set aside.

6. 6

   6. Roughly chop the charred asparagus, reserving the tips separately for texture later if desired. Add the asparagus stalks, charred onion, drained rehydrated chiles, smashed garlic, preserved lemon rind, tomato paste, rose water, ground spice blend, apple cider vinegar, and 60 ml of the reserved chile soaking liquid to a high-powered blender.

7. 7

   7. Blend on high for 90 seconds until the mixture is mostly smooth but still has a slightly rustic, volcanic texture. Stream in the 3 tbsp olive oil while blending. Add water tablespoon by tablespoon until the sauce reaches a thick, pourable consistency — think lava, not soup.

8. 8

   8. Taste aggressively and adjust: more preserved lemon rind for funk and salt, more árbol chile soaking liquid for nuclear heat, more apple cider vinegar for brightness. Fold in the fresh cilantro and pulse 3–4 times — you want green flecks, not a smoothie.

9. 9

   9. Optional but glorious: stir in the reserved charred asparagus tips whole for textural drama and visual proof of what's in this sauce.

10. 10

    10. Transfer to sterilized jars. The sauce keeps refrigerated for up to 3 weeks, and the flavor deepens significantly after 48 hours as the smoke, char, and preserved lemon ferment-funk fully integrate. Shake or stir before each use.

Variations

• ◆Preserved Lemon Bomb Edition: Double the preserved lemon rind and add 1 tsp of the preserved lemon brine for a more aggressively fermented, salty-citrus punch that turns the sauce almost ceviche-adjacent in its brightness.
• ◆Ras el Hanout Depth Charge: Replace the individual spices with 2 tbsp of a high-quality ras el hanout blend and add 0.5 tsp ground ginger and a pinch of saffron bloomed in 1 tbsp warm water for a more complex, perfumed Moroccan spice architecture.
• ◆Green Fire Variant: Swap dried red chiles for 4 fresh green jalapeños and 2 serrano chiles (smoked alongside the asparagus), and add a large handful of fresh parsley alongside the cilantro for a verdant, electric-green sauce with the same smoky char backbone.