On TasteAtlas, these are the best-rated foods from every country. How many have you tried?
I'd like to note that I went in alphabetical order, which is why the dishes that represent some of the countries aren't generally associated with said countries.
Excluded countries: Fourwing Flying Fish (Grenada, Saint Lucia, Saint Vincent and the Grenadines), Gravlax (Iceland), Haupia (French Polynesia, Samoa, Solomon Islands, Tonga, Tuvalu), Jollof Rice (Ghana, Liberia, Senegal, Sierra Leone), Kabsa (UAE), Kachumbari (Uganda), Karantika (Morocco), Manti (Uzbekistan), Pacific Smoked Salmon (USA), Pèpè Soup (Nigeria), Poulet Moambé (Democratic Republic of the Congo, Gabon), Roti Canai (Thailand), Samsa (Turkmenistan), Sarmale (Moldova), Sauce D'Arachide (Guinea), Shahan Ful (South Sudan, Sudan), Shawarma (Qatar, Saudi Arabia), Sucuk (Kyrgyzstan), Toum (Syria), Ugali (Lesotho, Malawi, Zimbabwe), N/A (Vatican City).
I accidentally listed roti canai twice.
Series: TasteAtlas foods.
No: 9.