Bring a pot of salted water to a boil. Hold one piece of asparagus in both hands and bend until it snaps to see where the woody part ends; then trim all the asparagus to that length. Cut asparagus on the diagonal into pieces and then cook in salted water for 3 minutes. (Don't overcook!): You will smell the first steam as the water heats, and the surface will shimmer before reaching a full rolling boil, which ensures the asparagus cooks quickly and evenly. Salting the water seasons the vegetable from the inside, improving its natural flavor. A common mistake is under-salting, which results in bland asparagus, so add enough salt to make the water taste like the sea.
While you're waiting for water to come to a boil and cooking asparagus, zest the lemon and then cut lemon in half and squeeze the juice. (Use a fine cheese grater if you don't have a lemon zester (affiliate link).): When you bend a stalk gently it will snap at the point where fibrous woody tissue ends, giving you a tactile cue for trimming. The sound is a satisfying little crisp break, and trimming at this point prevents tough, chewy bites. Avoid cutting too liberally into the tender portion, which wastes good asparagus.
Whisk together buttermilk (or sour cream or Greek yogurt), mayo, lemon juice, curry powder, Dijon mustard, lemon zest and sea salt to make the curry dressing. Start with the original amount of lemon juice and zest and taste to see if you want a bit more lemon.: Cutting on the diagonal increases surface area so the dressing clings and the pieces look elegant. After three minutes the asparagus should be bright green and just tender when pierced, not floppy. Overcooking will dull the color and produce a limp texture, so set a timer and test immediately.
After it cooks exactly three minutes, drain asparagus into a colander placed in the sink and let it drain well. Then lay out a paper towel on the counter and spread out the asparagus on the towel. Then cover with another paper towel and gently press down to blot away much water as possible.: As you zest you release aromatic oils that smell intensely citrusy and fresh, and squeezing the juice provides bright acidity for the dressing. Zesting first avoids removing fragrant skin with the juice. A common slip is juicing before zesting, losing that aromatic lift.
Let asparagus cool while you cut up enough cooked chicken to make 4 cups.: When you whisk, listen for a soft whisking sound and watch the dressing become glossy and smooth. The dairy base mellows the curry while mustard adds binding and subtle bite. Start with measured lemon and adjust after tasting, as too much acid can flatten the spices. Overmixing at high speed can break down the texture, so whisk to just combined.
Slice green onions on the diagonal and measure out the pine nuts (or nuts of your choice.): The sizzling steam and faint vegetal aroma tell you the asparagus has cooked; draining quickly prevents residual heat from continuing to cook the stalks. Shaking the colander helps shed extra water so the dressing does not become diluted. Leaving the asparagus wet will water down the salad and make it soggy, so be thorough here.
Combine diced chicken and asparagus with desired amount of dressing; you may not need all the dressing if you prefer your salads to be fairly dry.: Blotting removes surface moisture so the dressing clings to the pieces instead of sliding off. You should feel the towel pull away beads of water, and the asparagus will dry to a matte finish. Rushing this step will let excess liquid pool in the salad bowl, thinning flavors.
Gently stir in the green onion and pine nuts.: Cooling the asparagus prevents the dressing from wilting ingredients, and cutting chicken into uniform one inch pieces creates consistent texture. The contrast between cool vegetables and room temperature chicken helps maintain crispness. Cutting when hot can melt the dressing into the protein and change texture, so allow the chicken to be cool or slightly warm.
Season the finished salad to taste with salt and fresh-ground black pepper, and serve.: Diagonal slices of green onion release a mild onion aroma and look attractive. Toasted pine nuts will smell slightly sweet and nutty, and you should hear a faint crackle as they toast if using a pan. Watch nuts closely when toasting, as they go from perfect to burnt quickly.
This salad can be kept in the fridge for a few hours before serving, and it was still amazing as leftovers when it had been in the fridge overnight, so if you're cooking for a few people you could certainly double the recipe. If you have any extra dressing you might want to add a bit more right when you serve the salad.: As you fold the dressing in, you should see it coat the pieces without pooling at the bottom; the goal is even coverage. Tasting as you go ensures you add just the right amount for your preferred moistness. Adding too much dressing will drown the salad and mask the delicate flavors.
Gently stir in the green onion and pine nuts: Gently folding preserves the texture and keeps nuts intact, offering intermittent crunchy bites that contrast with tender chicken . You will notice the salad develop a layered look as green and nutty specks appear. Stirring too vigorously can break the nuts and make the mix look messy.
Season the finished salad to taste with salt and fresh-ground black pepper and serve: Fresh-ground black pepper releases a sharp aroma when cracked and final seasoning ties all flavors together. Taste one forkful and adjust salt and pepper; small increments are key. Oversalting at this point cannot be easily corrected, so go slowly.
This salad can be kept in the fridge for a few hours before serving and it was still amazing as leftovers when it had been in the fridge overnight so if you're cooking for a few people you could certainly double the recipe: Chilling allows the flavors to meld and mellows sharper elements, often improving the overall balance; you may notice the dressing become more integrated and aromatic after a rest. When storing, keep nuts separate if you want to preserve crunch. A frequent error is leaving the salad at room temperature too long, which can reduce freshness.
If you have any extra dressing you might want to add a bit more right when you serve the salad: Extra dressing added at service brightens the salad and refreshes the mouthfeel, especially if it has sat in the fridge. Drizzling just before plating ensures the salad looks glossy and lively. Adding all extra dressing too early can make the salad soggy over time.