EXCLUSIVE: Khloe Kardashian Spills on Fireworks Fiasco at Boyfriend's Yacht Party: 'No One Would Just Take Tha

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Khloe Kardashian's fireworks issue? Literally blown out of proportion.

At least, that's what the reality star told ET when we caught up with her at Williams-Sonoma in Calabasas, California. She turned up at the store's re-opening in her hometown to surprise her mom, Kris Jenner, who was signing copies of her new cookbook, In The Kitchen with Kris: a Collection of Kardashian-Jenner Family Favorites.

WATCH: Kardashians Go All Out for Khloe's Boyfriend's Yacht Birthday Party

Khloe says that even though people in the harbor where her boyfriend, NBA player James Harden, had his yacht birthday party were complaining about the noise, she had taken all of the precautions necessary to light up fireworks.

"I got all the permits," she told ET. "Someone couldn’t release those fireworks if you didn’t get [one]. The company's licenses would've been revoked, so of course I got everything I had to do to do so. No one would just take that risk."

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As for that photo of Kris and Kanye West sleeping on the yacht? Khloe found it "hysterical," because she and Kendall took it. “What party poopers these two are!" she said. "It was literally like 10 o’clock when that picture was taken. Like, wake up!"

Khloe also joked that despite her mom's new cookbook and years of experience making meals for six kids, she's the one who knows her way around the kitchen. "I might actually be the first best cook," she said after being told that Kris said Khloe was the second best chef in the house. Naturally, Kris feigned surprised and threatened a cook-off between the two.

The 31-year-old Keeping Up With the Kardashian star did say that some of the recipes in the new book are hers, as she and her mom have traded over the years. In fact, by 14, Khloe was already cooking meals for her younger siblings, Kendall and Kylie Jenner. "That's how good of cooks we are, that we share recipes with one another," Khloe explained. "But I've learned from her, obviously."

Now that is something we hope to see on the next season of KUWTK, which the family is currently filming.

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Kris also called her daughter a nester, a title Khloe was happy to take on, as she plans slumber parties with her nieces and nephews and even jokingly calls her younger brother Rob her "son." Find out what's behind Khloe's maternal instincts in the video below.