It might be a good idea to call them and check.
I went to Boma on a Friday a few weeks ago and they had stuff that wasn't on any of those rotation menus, like calamari salad and she-crab soup.
I didn't see any ribs.
Here's what they had that we tried: (copied from my dining review w/ video, see here -
http://www.disboards.com/showthread.php?t=2239274)
Soups
She-Crab - Delicious! A little salty, but sooo good.
Chicken and Corn Chowder - Good, but nothing special
Lamb Potje (sp?) - Delicious lamb stew, excellent flavors.
Butternut Squash - Yummo! Sweet like pumpkin pie in a bowl.
Coconut Curry Seafood Stew - Delicious, light flavor & generous seafood.
Salads
Calamari Salad - Amazing! You wouldn't think that fried calamari would taste that good in a salad but it was very good - buttery and the dressing set it off perfectly
Watermelon Rind - Good as always, not too spicy this time
Avacado and Papaya - A little heavy on the citrus flavor, but still good.
Jicama Apple and Greens - So-so, the greens tasted a little bitter to me, but that could be b/c I had the butternut squash soup right before
Curry Pasta Salad - Delish! My husband liked this and he's not a big pasta-salad eater
Red Pepper Hummus - Yummo! A little salty
Whitebean Hummus - Delicious!
Hot Entrees
Falafel - Very good! Crispy on the outside and tender on the inside
Bobotie - Good as always, nice spices
Carved beef - Good, always eat it with the Boma mustard
Mealie bread - So-so, this just tastes like cornbread to me
Pap and Chaka Laka - Good, filling like mashed potatoes, still not sure exactly what this is!
Fufu - Delicious!
Corn and Spinach Pudding - Good, very creamy, kind of like grits
Desserts - my favorite!
Chocolate Mousse Cups - Yummo, I like this better when you can get a big spoon of the mousse, but its still good in the cups
Cassava Cake - So-so, this didn't really have much flavor
Zebra Domes - Delicious! I've had these before & didn't get the big deal, I get it now!
Pineapple Upside Down Cheesecake - Very Good!! I wish that I had gotten two of these
Fruit Tartlet - Not good, no taste really
Banana and Butterscotch Bread Pudding - Delicious! Sooo good, warm and gooey, I prefer it w/ the vanilla sauce over the chocolate rum sauce