Donghai Komatsubara Hot Spring is located in Donghai County, Lianyungang City, Jiangsu Province. It is a tourist resort with hot springs as its main feature. It is difficult to give a specific answer to the question about which hot spring in Komatsubara in the East China Sea is delicious because of different personal tastes and preferences. However, the following are some reference information that may be helpful to you:

1. There are many restaurants and food stalls around Komatsubara Hot Springs in the East China Sea, offering all kinds of delicious food, including local specialty snacks, barbecue, seafood, Sichuan cuisine, barbecue and so on. You can choose according to your own tastes and preferences.

2. if you want to taste local specialties, you can try local specialties in Donghai, such as Donghai fish cake, Donghai Chinese hamburger, Donghai cold rice noodles, Donghai instant noodles, etc.

3. In addition, there are many food choices in tourist attractions near Komatsubara Hot Springs in the East China Sea, such as Huaguoshan in Lianyungang, Qingsongling Forest Park in Donghai County, Bamboo Garden and Donghai Forest Hot Springs Scenic Area. Around these scenic spots, you can taste local specialties and farm dishes.

To sum up, there are many food choices around Komatsubara Hot Springs in the East China Sea. You can choose according to your own tastes and preferences.