Vice President Kamala Harris has gone 20 days without holding a formal press conference since becoming the presumptive Democratic presidential nominee as of Saturday, although she did answer a few questions on an airport tarmac Thursday.

Harris became essentially the de facto nominee after President Biden endorsed her on July 21 when he dropped out of the race and she officially clinched the nomination last week. She has been busy on the campaign trail, spoken at various events, and given informal remarks to reporters at various points, but hasn’t done a formal press conference or wide-ranging interview in the 20 days that have followed. 

Harris, amid mounting criticism on that front, briefly talked to reporters traveling with her in Michigan on Thursday. Speaking for just over a minute, she said she looked forward to debating former President Trump on Sept. 10 on ABC and defended the military record of her running mate, Minnesota Gov. Tim Walz.

She also said her team was trying to set up an interview by the end of the month, as she has yet to do a one-on-one sit-down interview.

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This week, she made headlines by picking Walz as her running mate, but the two have still not been questioned formally in interviews or press conferences. It's gotten the attention of GOP vice-presidential candidate JD Vance, who has implored the media to do better on the issue and get Harris to answer questions.

During a Wednesday press conference in Detroit, Vance urged reporters to "show a little bit of self-awareness" and pushed Harris to "do the job of a presidential candidate" by speaking to them.

"Until she does, you guys have got to stop giving her a honeymoon and pretending that she is something she isn't," he said. 

National Review senior writer Noah Rothman recently asked his social media followers, "When is Kamala Harris going to hold a press conference?" 

"The most revealing exposure to which a candidate can submit is a prolonged press conference — and that’s precisely what Harris needs to do. Indeed, we know that’s what she needs to do because it was only a few weeks ago that Democratic political professionals and their allies insisted that was what Biden had to do," he wrote for National Review.

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NewsBusters executive editor Tim Graham expects her to follow President Biden’s 2020 playbook, when he was famously accused of hiding in his basement during the COVID pandemic. 

"Kamala Harris should absolutely hold a press conference. One would expect it when she names her vice-presidential pick. But we cannot expect her to break from Biden's serial avoidance of press conferences," Graham told Fox News Digital. 

"Since the 2020 campaign, we have witnessed the bizarre spectacle of Donald Trump granting wide access to networks that suggest he's a fascist and hammer him daily, while Biden and Harris won't grant interviews to media outlets that gurgle all over them and their ‘historic accomplishments,’" he continued. "Either they think the press can never be servile enough or they are projecting a complete lack of confidence in their efforts to put complete sentences together." 

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U.S. News & World Report senior national correspondent Oliver Knox wrote that "of course" Harris should take questions from the press. He said it’s already a "thing" for people in the media industry but pressure isn’t going to "dissipate" as non-journalist begin to ponder where she stands on certain issues. 

"A press conference may be high-risk, low-reward for Harris/Walz. But the longer they don't do a proper q-and-a, the tougher that q-and-a will be on both sides," Knox wrote. 

The Democratic National Convention is set to kick off Aug. 19 in Chicago. 

Fox News Digital’s Paul Steinhauser contributed to this report. 

With summer grilling season in full swing, folks might be looking to push beyond the standard summer grill fare of burgers, hot dogs and sausages. 

While vegetables are not a traditional barbecue item, grilling is actually a great way to prepare them – and add some color to a meal. 

Two chefs shared with Fox News Digital ways to grill vegetables – and their techniques to bring out the best flavors from the grill. 

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"For the most part, almost any vegetable, theoretically, can be grilled," Jami Flat, executive chef at Amaterra in Portland, Oregon, told Fox News Digital in an email.

"You want to make sure you're cooking it until al dente and not cooked too much through," he added. 

Flat's biggest tip for grilling, he said, is to "slightly reduce the heat" used, depending on the size of the vegetable being grilled, he said. 

Different vegetables have to be approached differently, Flat said. 

"There isn't one technique that fits each ingredient," he said. "Time and temperature on the grill will vary depending on what you want to do with it. You need to begin with the end product in mind." 

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For instance, he said he grills zucchini or eggplant "with the purpose of removing the inside from the skin." He will then purée the grilled vegetable for one of his dishes. 

But vegetables or even fruits with a high water content should not be grilled the same way as other vegetables, he said. 

"As a general rule of thumb, items with a higher water or moisture content will be more difficult to grill because you won't get that char," he said.

The type of grill used – such as a gas grill, charcoal or other type – plays a role in how to approach grilling a vegetable, he said. 

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"Grilling food with higher moisture needs to be approached in a different way," Flat said. "Make sure it's a very quick grill on an extremely hot surface." 

Flat's favorite vegetable to grill, he told Fox News Digital, is green beans – particularly in the summer months, when they are in season at the farmer's market.

"They are beautifully tender," he said. 

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"Just add a little olive oil, salt and pepper over high heat. Add a little char on one side, but be careful not to grill them for too long."

Chef William Dissen, a James Beard-nominated chef, restaurateur, culinary diplomat and author, told Fox News Digital that his favorite vegetables to grill are "squash, broccoli, asparagus, potatoes, peppers and onions."

"These vegetables love a good char and are enhanced by the flavor of the smoke from the grill," Dissen said in an email to Fox News Digital.

Dissen is the owner of the Market Place restaurant in Asheville, North Carolina, and the author of the book "Thoughtful Cooking: Recipes Rooted in the New South." 

A way to further enhance the flavor of grilled vegetables is with a simple marinade, Dissen said – even something like lemon juice or vinegar. 

"Growing up, my dad always used a bottle of Newman's Own balsamic vinaigrette and Italian dressing to make a quick marinade, then put it on the grill with the veggies to add acidity, herbal-ness and oil," he said. 

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"It was a quick and easy way to add more flavor to the grilled vegetables," Dissen said. 

But most of all, Flat encouraged people who might be afraid to grill to "just try it." 

"Do a grilled potato salad or roasted potato salad over the grill instead of boiling or roasting potatoes," Flat said. "Look up a standard recipe online and see what works."

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Plus kids love it, he said. 

"Grilling is a fun way for kids interested in vegetables since they can watch it cook and learn something at the same time," Flat said.