One of the roadfood delights of the summer has arrived in the Pacific Nothwest. Burgerville's Walla Walla sweet onion rings are on the menu. Walla Walla sweets are a delightfully tasty low acid onion that remind me of Vidalia onions. Burgerville also makes a Walla Walla sweet onion burger that is delicious. Any roadfooders in the Portland- Vancouver area should stop and sample.