I can't speak for everyone, but it's been tricky determining what's gourmet food and what isn't. This is a ongoing search for gourmet food items, if anyone finds new ones be sure to post about them here! I'll include them onto the list.
Special thanks to @beanster, @nyxlotus,@Mags, @Dimension, @Meimorie, @ArtsyAxolotl, and @Kiksadi for some of these finds! @nyxlotus has also made a visual guide for this list: shorturl.at/uQT25
Gourmet Food Discovered:
Astral Egg
Black Egg
Belline Berry
Blue Egg
Blue Fuzzy Apple
Bluroot
Bread Bowl Soup
Brightberries
Brown Egg
Bone Soup
Bubble Berry
Bulkorn
Cacti Delicantatoo
Cake Slice (Heffrad's Birthday 2021)
Cheese Clogs
Chocolate Soup
Chocolate Strawberry Egg
Chocolate Strawberry Tart
Dainen Berry
Dainen Training Treat
Desert Mushrooms
Dramsi Fruit
Evil Soup
Fancy Soup
Fish Cakes
Gladown
Golden Apple
Green Egg
Gummy Shamrocks
Haspur
Heart Berry
Helio Berry
Hot Dog Sundae
Insect Fruit
Jar of Dark Soup
Jar of Light Soup
Kiwi Donut
Large Mushroom
Maya Egg
Orange Chicken Tower
Orange Egg
Pink Egg
Pocku Berry
Prulen Double Decker
Prulen Pounder with Cheese
Pumpkin Soup
Purple Bell Pepper
Purple Egg
Rainbow Cotton Candy
Rainbow Candy Stix
Rajeck Berry
Red Egg
Red Mushroom
Salmon
Spaghetti
Serpens Berry
Serpens Shed Skin
Serpens Soup
Silver Apple
Silverlight Fruit
Sock Soup
Spoiled Fish Soup
Strange Chicken Soup
Tall Basket of Green Apples
Tall Basket of Red Apples
Tall Basket of Yellow Apples
T-Bone Steak
Tea Set
Tentacle Steak
Trachops Fruit Salad
Trachops Fruit
Turtorris Fruit
Turtorris Soup
Yellow Egg
Yellow Fuzzy Apple
Whirlta
White Egg
Winged Berry
But I ain't got a hammer / And I ain't got a pencil / And I ain't got a lasso / So I'm doing it the hard way / Like a post post-modern man