BE CAREFUL OF SCALLIONS

Scallions play a bit part in many salad dishes, but a little goes a long way, as evidenced by the massive hepatitis A outbreak at that Chi-Chi's in 2003. Dirty scallions have also triggered small hepatitis A outbreaks at other locations.

Other unpleasant bugs known to have grabbed a free ride on green onions include the parasite Cryptosporidium, Shigella, and the ever-present Salmonella.

At the supermarket, buy refrigerated scallions; room temperature can trigger a bacterial explosion. Meanwhile, at home, turn on your tap (faucet) full force to blast away visible dirt. As you rinse, remove the outer sheath to expose lingering micro-organisms, but realize that any step short of thorough cooking is only a partial solution.

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