Food or beverages can add a bit of flavor to a scene, whether it's in a way to illustrate a character's culture, if they drink or not, or as a gag (spit takes are a fun thing to write, ngl). Plus, they can add a little more to a scene to help us understand where we are and what are characters are doing. It can also be used as a prop. For example, "Johnny stared despondently down at his dinner plate, shuffling his vegetables around with his fork, making it appear as though he were eating, even though he had no appetite."
And yes, it can even be used to add spice to a scene, but we kinda wanna keep it a bit SFW here 
Share away, I'd love to see how you work food into your stories. Here's a couple of examples from my own books.
“Hey, there you are,” she said with a smile. “I’ve been looking for you everywhere.”
Hero shrugged, running a hand through his disheveled blonde hair, hoping she didn’t notice. “Sorry, I was trying to find that bacon Greg was talking about.”
Charlotte cocked one eyebrow. “For ten minutes?”
“To be fair, there’s a lot of bacon,” Hero said, jutting his thumb at the steel shelves.
She stared at him, not buying it for a second. “Uh huh.” She shook her head and grabbed the case in question. “Oh look, here it is.” She turned and headed back out the door. “Your belt is undone.”
Hero froze and glanced down, grabbing at his waistband. He wasn’t wearing a belt.
Charlotte glanced back and grinned. “Got ya.”
“You know, we may end up starving to death if we do get our own place.”
“Or worse, if Kana moved out.” Gen shuddered and shook his head. “My dad is no better at cooking than I am.”
“What about that stew he made a few weeks ago? That wasn’t…terrible,” Mika said politely.
“The meat was too tough and the veggies were soggy. It was also under seasoned and bland as hell. No, sir, he is a crap cook.” Gen sighed. “Kana is never allowed to leave us. We’ll die, otherwise. Or get really fat and gross from all the take out.”
Mika laughed. “I doubt that would happen.”