Does anyone else think it's a good idea to serve real food for immersion in roleplay

Well, I've said plenty of times the food would be prepared before the game maybe I'd let them know beforehand with a menu handout early on so they could decide if they want to eat anything. I also said that the food and/or drinks would be served during break periods where the character sheets are put a safe distance from the table.

For example before the planning phase fully commences I know that I'm gonna have the party camp with Elves or Half-Elves in Faerun So I create a menu handout with the following from the Heroes' Feast books along with Puncheons and Flagons

Quith-Pa

Elven Bread

Moonshae Seafood Rice

Greenspear Bundles in Bacon

Cherrybread

Elven Marruth

Chopforest

Elven Flatbread

Meal's End

High Harvest Puree

Evermead

Elverquisst

Feywine Punch

and 

Kinship Shrub

I would also have mini explanations of the ingredients so the players know what they want.

Quote from Samueltheslayer >>

I think using real food during roleplay to represent the fictional food being served at a Tavern, an Inn or a camp during a campaign would help with immersion. Books like the Heroes' Feast books or Puncheons and Flagons would work as well as the Juniper's Companion to Venturesome Cookery blog or other fantasy-themed cookbooks like both volumes of the Elder Scrolls cookbook and the Diablo cookbook and cocktail book or the Warcraft cookbooks, you may have to rename some of the recipes though for the sake of roleplaying.

For example if you're doing a campaign set in Maztica you can make Maztican Pan-Fried Corn Fritters, Maztican Bean Stew and Mayzcakes(all from the Juniper's Companion to Venturesome Cookery blog), Argonian Swamp Shrimp Boil (from the first volume of the Elder Scrolls cookbook), Savory Thorn Cornbread (from the Elder Scrolls cookbook volume 2) and Kaeth (from Heroes' Feast: Flavors of the Multiverse). You can rename the Argonian Swamp Shrimp Boil and the Savory Thorn Cornbread to something like Tabaxi Shrimp Boil or Maztican Cornbread.

If you're resting in a tavern in the Domains of Dread you can serve Barovian Butterscotch Pudding from the first Heroes' Feast book along with the various Ravenloft foods presented in the second Heroes' Feast book as well as The Necromancer and Hand of Vecna cocktails (from Puncheons and Flagons) you can rename them to something like The Lich or Finger of Death.

If you're at a Tiefling Camp then maybe you can serve Fire-Spiced Abyssal Chicken Kebabs (from Heroes' Feast) and the Hellish Rebuke cocktail (from Puncheons and Flagons) along with Sheogorath's Strawberry Tarts (from the first Elder Scrolls cookbook) and Sanguine "Shaven Fruit" (from the Elder Scrolls cookbook volume 2). If you're hanging out with Aasimar you can serve Bytopian Shepherd's Bread (from Heroes' Feast) and Fargrave Sweetrolls (from the Elder Scrolls cookbook volume 2) with the Astral Plane cocktail (from Puncheons and Flagons). A Dragonborn camp can serve Arkhan the Cruel's Flame-roasted Halfling Chili (from Heroes' Feast) along with Dragonberries (from Puncheons and Flagons).

If you're at a tavern in Droaam maybe you can serve the Pack Leader's Bone Broth, Troll Fat Jerky (both from the second Elder Scrolls cookbook), Orc Bacon (from Heroes' Feast) and the Ogretoe cocktail (from Puncheons and Flagons).

 For me this is perfect but it is a really hard one experience if you want to really create something from DND