We had fried plantains, sprinkled with lots of salt, rice and gandules ( green pigeon peas. That's what they're called on the can, though my grandmother always cooked them fresh herself.), roast pork and pasteles (a meat pie made with batter from green bananas - this is a kind of love it or hate it type of food). Of course we also had the turkey, stuffing and mashed potatoes...and lots of other things.
My grandparents and so many of our other relatives who didn't speak English pronounced it Sangivin. I'm not sure if they understood the full meaning of the holiday, but they sure got the food part right.
By the time I was a teenager, a new dish was added to our typical Puerto Rican Thanksgiving. I could never understand why we also always had lasagna.(?)
Whatever your meal, whatever nourishes you, may you have it always,
and may gratitude season your days.