By 1920, lemons were readily available across the U.S. Trains quickly transported them across the country. And, the California Fruit Growers Exchange had even branded lemons produced by its growers as Sunkist Lemons.
I enjoy eating old-fashioned foods. Many others prefer trendy foods. Apparently people have wanted to eat “modern” foods for a long time. According to this advertisement, the modern way to serve tea is with lemon instead of cream – which suggests that the ad copy writer believed that promoting modern food combinations was a winning strategy for an ad campaign.