A Gastronaut is an English slang word describing  someone who is especially adventurous in their  

eating habits, often seeking out new, exotic,  and sometimes unusual culinary experiences.

This term combines "gastronomy" (the  practice or art of choosing, cooking,  

and eating good food) with "astronaut"  (a person who travels in space),  

suggesting a sense of exploration  and adventure in the realm of food.

Let's use this English slang in sentences:

"Linda's gastronaut adventures  led her to a tiny café in Italy  

where she discovered the best  truffle pasta in the galaxy."

"As a self-proclaimed gastronaut,  

Mike's idea of a perfect weekend is  trying every food truck in the city."

"For her birthday, Emma, an avid gastronaut,  

asked for a world map not for travel, but to pin  and track the origins of her favorite dishes."