Back in February, a seemingly unstoppable river of tomato juice was flowing out of supermarket doors up and down the country as Japanese shoppers jumped on the latest food fad to hit the nation. The frenzy had been sparked by a report written by researchers at Kyoto University that seemed to indicate that consuming large amounts of tomatoes was effective in alleviating "metabolic syndrome" (read: getting rid of your gut). Nearly six months later, although the tide of red pulp has slowed somewhat, sales of tomato juice are still significantly up, indicating that the trend is still in season.

Kagome, who own a whopping half share in the domestic tomato juice market, report that they shipped double the amount of tomato juice in June this year compared to the same period in previous years. A Nikkei Shimbun article reports that sales of fresh tomatoes are also up, with Summit supermarket recording a 21 percent year-on-year rise in tomato sales this June.

It would be easy to call the jump in fresh tomato sales a statistical anomaly, since radiation anxiety made last year an exceptionally poor one for fresh veggie sales. But there is other evidence that home-makers are flocking back to the humble tomato. Recipe website Cookpad now has about 105,000 tomatotastic recipes submitted by users. Before the tomato boom, there were about 1,000 contributions per month for new tomato recipes. After the fad hit, that figure rose to 2,500.