Remember how the spout on those paper half-pint milk cartons would sometimes taste nasty?

I do, so I wasn't surprised when dairy promoters revealed a year-long study involving more than 100,000 elementary and secondary school kids that found that kids consumed more milk when it was served cold in plastic bottles and offered in a variety of flavors.

All this comes as a side note to Sonic's announcement that the company has partnered with The National Dairy Council on a milk offering.

Expanding on its Ultimate Drink Stop selections, the drive-in concept is introducing low-fat (1 percent) white and chocolate milk in resealable 8-ounce plastic bottles. Sonic is also the third quick-serve restaurant chain to feature the 3-A-Day of Dairy logo on its milk packaging, indicating it is an excellent source of calcium.

The single-serve milk can also be ordered as a beverage option in Sonic's kids meal at no additional charge.

The hard part will be choosing milk over one of Sonic's Cherry Limades.