The most terrifying dishes in the world may be perceived as such due to their origins in various cultures and the aspects that many find horrifying or frightening. Here are some dishes that could be considered terrifying:

1. Balut: Popular in Southeast Asia and other regions, balut is a fertilized duck egg that is incubated for a certain period and then boiled alive. The dish includes the fetus, which consists of parts such as bones, feathers, and beak.

2. Hákarl (Rotten Shark): Originating from Iceland, hákarl is fermented Greenland shark meat that has a strong ammonia-like smell, often served as an appetizer.

3. Sannakji (Live Octopus): A Korean dish consisting of small octopus pieces that are still moving and eaten alive. Due to the tentacles still squirming, it can be hazardous if not consumed carefully.

4. Raw Horse Meat (Yaguaru)**: A traditional dish of the Ainu people in Japan, typically thin slices of raw horse meat served alongside various seasonings.

5. Salo (Frozen Pork Fat)**: A Ukrainian dish of thinly sliced frozen pork fat, often eaten with bread or by those accustomed to cold cuts.

These dishes may be considered terrifying by some due to their preparation methods or primary ingredients. However, perceptions can vary greatly based on cultural perspectives and individual preferences.