The Kyoto neighborhood of Gion is small but complicated. Wedged between the hills of Higashiyama and the Kamo River, it contains some of Japan's most picturesque and well-trodden streets, but there's also a warren of back-alleys and lanes with bright lights and seedy goings-on.

Ogawa, located down one of these Gion capillaries, is small but uncomplicated: The counter-only restaurant seats six, and the chef Yosuke Ogawa serves wholehearted food in a a light-hearted setting. I have a feeling that when you scratch the formal surface of Kyoto's traditional chefs, they're sociable behind the serious manner — depending on their audience.

On a recent visit for lunch during one of the first humid days of summer, the temperature inside the restaurant felt hotter than outside — being seated within reach of the grill didn't help. However, the prix fixe lunch (I opted for the ¥5,000 menu), opened with a deliciously refreshing riff on a salad: a fruity tomato, stripped of its skin, in a gelatinous vinegar-infused broth studded with junsai (an edible pond weed that grows in a natural gel sac) from Hiroshima. This may sound like a mouthful, but it was literally only a mouthful, with the leaves and stems of the junsai adding a minty quality.