Bitter Melon Day (Gōyā no Hi)

What Is Bitter Melon Day?

May 8 is "Goya Day" (Bitter Melon Day), established by producer groups in Okinawa and other regions. The date comes from a wordplay on "gō (5) yā (8)" — sounding like "goya," the Okinawan name for bitter melon. The day aims to promote the appeal of goya (also known as bitter gourd or bitter melon) and boost its consumption.

The Background of Bitter Melon Day

Goya is one of Okinawa's signature vegetables, well-loved for its resistance to summer heat and high nutritional value. The dish "goya champuru" — a stir-fry made with goya — is especially famous nationwide as a representative Okinawan dish. May is also when goya shipments start to increase, making it a fitting time for this seasonal celebration.

Characteristics of Bitter Melon

• Distinctive bitterness: Contains a bitter compound called momordicin, said to stimulate appetite and support digestion.
• Rich in vitamin C: Notably, this vitamin C is more heat-stable than in many other vegetables.
• Great for beating summer fatigue: Packed with minerals and nutrients, making it useful for managing your health during hot weather.
• Popular for home gardens: Often grown as a "green curtain" on trellises, providing natural shade as well as food.

Fun Facts About Bitter Melon

• In Okinawa, it's almost always called "goya" rather than the standard Japanese "goya" (with a slightly different pronunciation) — locals rarely use the shorter form.
• The bitterness can be reduced by salting and rubbing the slices, or by briefly boiling them.
• The white pith inside goya is actually nutrient-rich and less bitter than the green flesh.
• Goya only became widely popular across Japan relatively recently, mainly from the 1990s onward.

Ideas for Enjoying Bitter Melon Day

• Try making goya champuru at home
• Experiment with other preparations, like goya salad or tempura
• Try growing your own goya in a home garden
• Visit an Okinawan restaurant and enjoy authentic local flavors

May 8: A Day to Savor a Healthy Vegetable

Bitter Melon Day is a great opportunity to enjoy this nutrient-rich vegetable that's perfectly suited to summer. With a little preparation, its distinctive bitterness can become a real treat. As the season approaches, why not try some goya dishes for yourself?