What is the best melted-cheese dish?

Half of these were invented to use up cheese that was going hard. The other half were invented to show off.

1

Fondue

Swiss pot of Gruyère and Emmental melted with white wine, eaten with bread.

2

Poutine

Quebec fries under cheese curds and hot gravy, so the curds go squeaky-soft.

3

Queso

Tex-Mex molten cheese dip with chilies, served hot with tortilla chips.

4

Raclette

A half wheel warmed at the edge and scraped over potatoes and pickles.

5

Grilled Cheese Sandwich

Buttered bread griddled around melting cheese until the crust crackles.

6

Mac and Cheese

Elbow pasta bound in a melted cheese sauce, baked or stovetop.

7

Nachos

Tortilla chips baked under cheese with jalapeños, beans and sour cream.

8

Mozzarella Sticks

Breaded mozzarella batons fried until the inside stretches on the pull.

9

Philly Cheesesteak

Chopped ribeye and melted cheese in a long roll from Philadelphia.

10

Quesadilla

A tortilla folded over melted cheese and griddled until crisp.

11

Croque Monsieur

French ham sandwich under Gruyère and béchamel, browned in the oven.

12

Saganaki

Greek kefalograviera fried in a pan and finished at the table.

13

French Onion Soup

Beef broth and caramelised onions under a bread raft and grilled Gruyère.

14

Khachapuri

Georgian bread boat filled with molten cheese, butter and an egg yolk.

15

Aligot

Auvergne mashed potato beaten with Tomme until it stretches like ribbon.