Lettuce wraps make great picnic food for a hot summer night. I was inspired by the gorgeous full head of radicchio I got in my CSA box from Enterprise Farm. Big shout out here to Enterprise Farm in Western MA, without their year round weekly vegetable box I don’t know what I would do.
You could also use another soft lettuce such as Butter (Boston). Fillings could be almost anything with an Asian flair. Put everything in containers and assemble wraps as you eat on site.
For our rooftop picnic lettuce wraps:

Grilled Chicken thighs cut into thin slices. Marinate or rub with your favorite Asian flavors.

Red Cabbage slaw dressed with Seasoned Rice vinegar, tahini, soy sauce, toasted sesame oil and a little mayo.

Mandolin sliced baby cucumbers and carrots in honey, lime, toasted sesame oil, salt marinade.