We mix and serve our Hidden Valley Ranch dressing from the packets because we like the taste a little better than what you buy in a bottle. We mix it in a bowl then store it in a quart sized canning jar or a generic squeeze bottle. It works OK but can be messy plus you have extra dishes to wash.  I would love to see a shaker bottle that could be used to measure, mix and serve all in one container. I can imagine using a similar concept to the blender bottle (http://www.blenderbottle.com/classic) with a few key differences to make it customized just for Ranch dressing. I have personally used these blender bottles for shakes and dressings and they work great! The wider mouth of the blender bottle is perfectly suited for adding mayo compared to other salad dressing mixers/emulsifiers on the market. Adding measurement marks on the side of the container to show how much mayo and how much milk would eliminate the need for using measuring cups. The Hidden Valley Ranch logo could be on the front so everyone who uses it knows it is Ranch Dressing. I can visualize the top green to match your bottled Ranch. Speaking of green, this would definitely be eco friendly keeping more dressing bottles out of the landfill. The shaker bottle could be available in two sizes: a smaller one for a 1 packet recipe and a larger one for a 2 packet recipe. The spout would need to be a little smaller or maybe more triangular to make it easier to drizzle the dressing onto your salad to avoid accidentally pouring out a big blob. You could sell it next to the packets of Hidden Valley Ranch mix on the grocery store shelf. I think you would sell a lot of them. I know I would buy one.