According to TasteAtlas, these are the most-popular 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: Azerbaijan (Lavash), Democratic Republic of The Congo (Robusta Coffee), French Polynesia (Haupia), The Gambia (Jollof Rice), Ghana (Jollof Rice), Jordan (Mujaddara), Lesotho (Ugali), Liberia (Robusta Coffee), Malawi (Ugali), Morocco (Couscous), New Zealand (Pavlova), Palestine (Falafel), Qatar (Machboos), Samoa (Haupia), Sierra Leone (Jollof Rice), Solomon Islands (Haupia), Tanzania (Robusta Coffee), Tonga (Haupia), Tunisia (Couscous), Turkmenistan (Samsa), Tuvalu (Haupia), UAE (Kabsa), Vatican City (N/A), Venezuela (Arepa), Wales (Fish and Chips), Zambia (Ugali), and Zimbabwe (Mageu).
Series: TasteAtlas foods.
No: ???