Introduction
Asparagus is a versatile vegetable that can be prepared in many delicious ways on the barbecue. When cooked properly, grilled asparagus turns out tender on the inside with a nice char on the outside. With just a few simple steps, you can turn this springtime vegetable into a tasty side dish or snack.
Grilling asparagus allows you to take advantage of its short growing season and highlight its fresh, green flavor. The high heat caramelizes the natural sugars and intensifies the taste. Barbecuing also gives asparagus a smoky essence that pairs well with all kinds of meals. Follow this guide to learn how to bbq asparagus to perfection.
Picking the Right Asparagus
Size and Thickness
When choosing asparagus to grill, opt for thick spears over thin ones. Thicker stalks will hold up better on the grill and cook more evenly. Look for spears that are at least 1/2 inch in diameter if possible. Avoid those that are spindly.
Freshness
Check that the stems are still firm and the tips are tight and compact. The tips should not be flowering open. Soft, limp spears will likely be stringy and mushy when cooked. Select vibrant green asparagus for the best flavor.
Equal Lengths
For even cooking, choose spears that are relatively equal in length. You can always trim them later to even them out. Avoid bunches with extremely short and long spears mixed together.
Prepping Asparagus for the Grill
Trimming
Once you have your asparagus home, you need to trim the stems. Remove any dried out or woody ends by grasping the bottom of the stalk and bending until it naturally snaps. The remaining end will be the tender part.
Alternatively, you can simply use a knife to slice off the bottom 1-2 inches of the stem. A vegetable peeler can also be used to peel the bottom portions to expose the softer inner cores if needed.
Cleaning
Rinse the spears under cool running water to remove any dirt or debris. Be sure not to soak them long, as excess water will hinder caramelization. Pat them dry afterwards with paper towels or a clean dish cloth.
Toss in Oil
Place the prepped asparagus in a baking dish or rimmed sheet. Drizzle with 1-2 tablespoons of olive oil or vegetable oil, turning to coat evenly. The oil helps them char nicely without sticking. You can also brush each spear individually.
Salt and pepper them lightly as well for enhanced flavor. You may add other dried herbs or spices like garlic powder to complement the taste.
Grilling Techniques for Perfect Asparagus
Grilling asparagus utilizes direct heat to cook the spears. The most common methods include:
Direct Grilling
Place asparagus spears perpendicular to the grates so they don’t fall through. Let them sear over direct heat, turning occasionally, until lightly charred and tender. This method requires constant monitoring to prevent burning.
Grill Basket
A grill basket keeps asparagus contained while allowing full exposure to the heat source. Toss spears in the basket first before placing it on the grill. Shake the basket to turn them.
Foil Packets
Wrapping seasoned spears in foil pouches allows them to steam while picking up a subtle smoky flavor. Poke holes in the foil so steam can escape. Flip the packets halfway through.
Skewers
Threading asparagus lengthwise onto skewers secures them for easy flipping. Ensure they are tightly packed and alternate the directions for even coverage.
Grilling Plank
Using untreated cedar or alder wood planks imparts extra smoky nuance. Arrange asparagus spears on the soaked plank, put it directly on the grill, close the lid and let it smoke-roast.
Infrared Grilling
Infrared grills work by heating the asparagus directly without drying it out. Follow your manufacturer’s instructions for best results with this intense direct heat.
Grilling Times and Temperatures
The exact grilling time will vary based on thickness and preparation method. Use these general guidelines:
- For direct grilling, cook approximately 6-10 minutes over medium-high heat, turning occasionally.
- Expect 10-15 minutes when using a grill basket, again over medium-high heat. Shake the basket to flip halfway through.
- Figure 12-18 minutes for foil packets, depending on thickness, over medium heat.
- Skewered asparagus will take 10-12 minutes over direct medium heat, rotating the skewers.
- With grilling planks, allow 15-20 minutes over indirect medium heat with the lid closed.
The internal temperature should reach 145°F. Spears should be lightly charred with a crisp tender texture. Remove immediately when done to avoid overcooking.
Seasoning Ideas
Beyond just salt and pepper, consider adding these flavor combinations:
- Lemon juice, garlic, Parmesan
- Sauce made with soy sauce, lime, ginger, honey
- garlic, basil, balsamic vinegar
- Dijon mustard, rosemary, lemon zest
- Chili powder, cumin, cilantro
- Teriyaki, sesame oil, toasted sesame seeds
Brush seasoned oil or sauce directly onto the asparagus before or during grilling for maximum impact. Get creative with mixes that complement the ingredients in your main dish.
Serving Suggestions
A bright lemon wedge or spritz adds a nice finishing touch. Grilled asparagus also pairs well with:
- Almonds or pine nuts
- Shaved Parmesan or feta cheese
- Fresh dill or parsley
- Tangy vinaigrettes or Greek yogurt sauce
Incorporate grilled asparagus into main dishes like fajitas, kabobs, pizza and seafood. Serve as a standalone appetizer or side. Combining warm, just-off-the-grill spears with cool, creamy dips is always a crowd-pleaser.
Storing and Reheating Leftovers
Store grilled asparagus in an airtight container and refrigerate up to 4 days. To reheat, place spears on a baking sheet and warm at 350°F for 5 minutes until heated through. You can also quickly steam in the microwave or sauté in olive oil to revive texture.
Spears hold up well when tossed into pasta, omelets, frittatas, risottos and stir fries. Puree into soups or cream sauces for bright flavor. The possibilities are endless for enjoying leftovers.
Common Questions about Grilling Asparagus
Should I peel asparagus before grilling?
Peeling is not mandatory but can help remove any stringy fibrous bits, especially on thicker stalks. A quick pass with a vegetable peeler removes just the outer skin.
Can you grill canned asparagus?
Yes, canned asparagus can work but be sure to pat it very dry first. The canning liquid may cause steaming instead of the desired charring. Fresh is still best for grilling.
What is the best oil for grilling asparagus?
Opt for olive, avocado or vegetable oil which have high smoke points. Their flavors also complement asparagus nicely without overwhelming it.
Should asparagus grill over direct or indirect heat?
Direct heat is ideal to get char marks, especially when grilling for short cook times. Indirect heat works better for thicker spears that take longer.
Can you grill asparagus on a gas grill?
Absolutely! Gas grills reach high enough temperatures to get great caramelization. Just be watchful since asparagus can go from charred to burnt quickly over direct flames.
Conclusion
From picking the freshest spears to seasoning them boldly, grilling brings out the absolute best in asparagus. Experiment with different methods to find your favorite way to achieve tender, lightly charred spears. Vary the prep techniques and flavor combinations over the short season. Grilled asparagus requires minimal time and effort for an easy vegetable side or snack that shines with any meal.