Dare level 5/5
Hột vịt lộn
Balut: fertilised duck egg
A duck egg incubated for about three weeks, then boiled. Yes, there is a duckling in there. In Hoi An it is an afternoon and evening snack, eaten on low stools, and locals swear it puts strength back in your legs.
How to eat it: Crack the wide end, sip the broth first, then spoon it out with rau răm (Vietnamese coriander), a pinch of salt and pepper, and lime.
Where: Trứng Vịt Lộn Na, 114 Trần Phú, inside the Old Town. Or Như Bình, 93 Nguyễn Trường Tộ, 14:00–22:00. Around 10,000–20,000 VND an egg.
Dare level 3/5
Bê thui Cầu Mống
Rare roast veal, skin on
A whole calf roasted over charcoal until the skin is gold and the meat is still pink, then sliced thin with the skin attached. It comes from Cầu Mống, a bridge on the highway west of town where a row of kitchens has cooked nothing else for generations.
How to eat it: Wrap a slice in rice paper with herbs, green banana and star fruit, and dip it in mắm cái: whole fermented anchovies mashed with chilli and garlic.
Where: In town, Bê Thui Hà, 115 Lý Thái Tổ, 6:30–21:00. At the source, Bê Thui Mười at Cầu Mống, 9 km west on the road to My Son, from 5 am.
Dare level 3/5
Phá lấu
Offal stew
Beef tripe, intestine and tendon simmered soft in coconut milk and five-spice. A southern street stew that Hoi An's students eat after class.
How to eat it: Dunk torn bánh mì into the broth, or have it over instant noodles, and dip the pieces in kumquat-and-chilli fish sauce.
Where: Tiệm Lẩu Bò Hai Mười, 11 Trần Cao Vân: a beef hot pot shop where phá lấu is the house special. 11:00–22:00.
Dare level 3/5
Mắm nêm
Fermented anchovy sauce
The smell arrives before the plate does. Anchovies fermented for months, then loosened with pineapple, garlic and chilli. It is the soul of central Vietnamese cooking, and most guests are converted by the third dip.
How to eat it: Start with it on the side, next to something mild: steamed pork rolls, or the smashed rice crackers of Cẩm Nam.
Where: Bà Hiếu, 25 Đào Duy Từ, with the pork rolls. Or Bánh đập Bà Già, 34 Nguyễn Tri Phương, Cẩm Nam.
Dare level 2/5
Ốc hút
Suck-it-yourself snails
Small snails stir-fried with lemongrass, chilli and lime leaf. The tip of each shell is snipped off, so you put your lips to the opening and pull.
How to eat it: One sharp suck. It will be loud; that is the point. Mop up the sauce with a piece of grilled rice cracker.
Where: The evening stalls on 18 Tháng 8 street, ten minutes' walk west of the Japanese Bridge: Ốc Hút Điện Phương is at no. 20. Or the snail restaurants along Lý Thái Tổ.
Dare level 2/5
Lòng gà
The giblets beside your chicken rice
The little bowl of broth that comes with chicken rice often has heart, liver and gizzard in it, and most shops sell a side plate of them tossed with onion and herbs. Sometimes it includes trứng non: soft, unlaid yolks.
How to eat it: Chilli jam, a squeeze of lime, and eat it with the rice like everyone else at the table.
Where: Any chicken rice shop. Ask for “một đĩa lòng gà” (a plate of giblets).
Dare level 1/5
Trứng gà nướng
Grilled chicken egg
The gentle way in. An egg is emptied, beaten with pepper and seasoning, poured back into its own shell, steamed, then grilled on a stick. It tastes like a peppery omelette you eat with a skewer.
How to eat it: Peel, dip in chilli sauce, done in three bites.
Where: Như Bình, 93 Nguyễn Trường Tộ, the same stall that sells the balut.
Dare level 1/5
Hến xào
Baby basket clams
Clams the size of a fingernail, raked from the riverbed around Cẩm Nam island and stir-fried with onion, herbs and peanuts. You get a few hundred to a plate.
How to eat it: Use a piece of sesame rice cracker as the spoon.
Where: Bánh đập Bà Già, 34 Nguyễn Tri Phương, Cẩm Nam.
Dare level 1/5
Xí mà
Black sesame sweet soup
A warm, jet-black soup of ground sesame, herbs and cane sugar that came to Hoi An with Chinese merchants. It looks like engine oil and tastes like a hug.
How to eat it: Stir, sip from the spoon, and don't wear white.
Where: Chè Xí Mà Phù, 45/17 Trần Hưng Đạo, 14:00–19:30.