iStock There's a lot of variety on "food TikTok." You can learn to perfect a hamburger or ferment kimchee, make old-fashioned Japanese candy or fry frog legs. From sourdough to feta pasta, much of the last year at home has been food-focused. And one driver of these delectable fads is the social media platform TikTok. Many people have embraced cooking during the pandemic, when they've been home, bored, looking to try something new. TikTok was ready to fill the gas a foodie paradise, and has seen more than 15 billion food posts. "It's my bedtime routine," Lori Jackson, 54, of Lynn, Massachusett...