Shiso-Wrapped Asparagus Tempura with Aji Amarillo-Koji Mayo
Spring is waking up, and there is no better way to celebrate than by wrapping fat, juicy asparagus spears in aromatic shiso leaves and dropping them in hot oil. The inspiration for this hit me during a late-night street food crawl in Lima, Peru. I was eating these incredible aji amarillo-slathered skewers and suddenly remembered the crisp, delicate tempura of my Tokyo training days. Why not bridge Tokyo and Lima right in my kitchen? That is what makes this recipe so special to me—it is a literal mashup of two culinary worlds I deeply love. Let's geek out for a second on the batter. The trick to a lace-like, shatteringly crisp crust is a vodka-spiked tempura batter. Why does this work? Vodka evaporates violently in hot oil and inhibits gluten formation, guaranteeing a crunch that survives the journey from fryer to plate. We pair this with an umami bomb mayo made from my ever-present stash of homemade shio koji and vibrant, fruity Peruvian aji amarillo paste. Want to make it your own? Swap the asparagus for thick-cut zucchini or even avocado slices, and if you do not have shiso, basil leaves work in a pinch. Just keep that oil hot and do not overmix the batter!
Featured Recipe
Shiso-Wrapped Asparagus Tempura with Aji Amarillo-Koji Mayo
Spring is waking up, and there's no better way to celebrate than by wrapping fat, juicy asparagus spears in aromatic shiso leaves and dropping them in hot oil. The trick to a lace-like, shatteringly crisp crust is a vodka-spiked tempura batter that inhibits gluten formation. Dipped into a Peruvian-Japanese umami bomb of aji amarillo and shio koji, this is the appetizer that bridges Tokyo and Lima right in your kitchen.
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Timeline
Ingredients
- 1 lb thick asparagus spears(Woody ends snapped off. You want the thick ones so they retain a juicy bite after frying.)
- 12 leaves fresh shiso leaves(Green shiso (ooba) works best here for its clean, minty-basil aroma.)
- 1 cup cake flour(Lower protein than AP flour means less gluten development, keeping the batter light.)
- 1/2 cup ice-cold vodka(Keep in the freezer. Alcohol evaporates faster than water and doesn't trigger gluten formation.)
- 1/2 cup ice-cold sparkling water(Keep in the fridge until the very last second.)
- 1 whole egg yolk(Cold from the fridge.)
- 4 cups neutral frying oil(Canola, grapeseed, or rice bran oil.)
- 1/2 cup Kewpie mayonnaise(Do not substitute standard mayo; you need the MSG and egg yolk richness of Kewpie.)
- 2 tbsp aji amarillo paste(Peruvian yellow chili paste. Fruity, slightly sweet, and moderately spicy.)
- 1 tbsp liquid shio koji(Fermented rice malt. Adds massive umami and subtle sweetness.)
- 1 whole lime(Zested and juiced.)
- 1 tsp shichimi togarashi(Japanese seven-spice blend for dusting.)
Instructions
- 1
Pour 4 cups neutral frying oil into a heavy-bottomed Dutch oven or deep pot. Attach a deep-fry thermometer and set the heat to medium-high to bring the oil to exactly 350°F.
10 min
Tip: Temperature control is everything in tempura. Too hot, and the outside burns before the asparagus cooks. Too cold, and it absorbs oil like a sponge.
- 2
While the oil heats, whisk together 1/2 cup Kewpie mayonnaise, 2 tbsp aji amarillo paste, 1 tbsp liquid shio koji, and the juice from 1 whole lime in a small serving bowl. Set aside.
3 min
Tip: Shio koji acts as a flavor multiplier here, linking the rich Kewpie with the fruity heat of the aji amarillo.
- 3
Prep the vegetables by taking your 1 lb thick asparagus spears and wrapping one of the 12 fresh shiso leaves tightly around the center of each spear. The natural moisture of the asparagus should help the leaf stick slightly.
5 min
Tip: If the leaves won't stay wrapped, a tiny dab of water on the edge of the leaf acts as a great glue.
- 4
In a medium mixing bowl, whisk 1 egg yolk with 1/2 cup ice-cold sparkling water and 1/2 cup ice-cold vodka. Roughly sprinkle 1 cup cake flour over the top. Use chopsticks to loosely mix it in a stabbing motion. Leave it lumpy! Do not whisk until smooth.
2 min
Tip: This is the cardinal rule of tempura: lumps are your friends. Overmixing develops gluten, which leads to heavy, bread-like batter instead of crispy lace.
- 5
Working in batches, dip half of the shiso-wrapped asparagus into the cold batter, letting the excess drip off for just a second. Carefully lower them into the 350°F oil. Fry for 2 to 3 minutes until the batter is crisp and faintly blonde (tempura shouldn't be deep golden brown).
3 min
Tip: Drip a few extra drops of batter from your fingers directly onto the frying asparagus to create those beautiful, crispy tendrils (called hanetsuki).
- 6
Using a spider strainer or slotted spoon, transfer the fried asparagus to a wire rack set over a baking sheet to drain. Repeat the dipping and frying process with the remaining asparagus and batter.
3 min
Tip: Always drain fried food on a wire rack, never on paper towels. Paper towels trap steam and ruin your hard-earned crunch.
- 7
Pile the hot tempura onto a serving platter. Immediately grate the zest from your zested and juiced lime over the top while the oil is still glistening, then dust generously with 1 tsp shichimi togarashi. Serve immediately alongside the aji amarillo-koji mayo.
2 min
Tip: The citrus zest hits the hot oil on the tempura crust and instantly releases its essential oils into the air. It's a cheap trick, but it smells like a million bucks.
Chef's Notes
Why does this work? Food science! We want the batter to shatter, which means we must wage war on gluten. Gluten forms when wheat proteins (glutenin and gliadin) meet water and are agitated. By swapping half the water for 80-proof vodka, we rob those proteins of the water they need to form elastic bonds. Plus, alcohol evaporates much faster than water in the hot oil, drying out the batter almost instantly. The result? A crust that stays crispy long after it leaves the fryer.
Kenji Nakamura
Where Japanese precision meets global flavors
I trained in Tokyo for eight years, mastering the discipline of washoku—traditional Japanese cuisine. But I got restless. So I cooked my way through Southeast Asia, spent a year in Mexico City, and fell hard for the food of Peru. Now I see connections between cuisines that others miss: the umami in dashi and fish sauce, the heat in shishito and Szechuan peppercorns, the way Japanese technique can unlock flavors from any tradition. I'm always fermenting something.