On Saturday, July 22, 2017 at 4:44:32 PM UTC-4, notbob wrote that he seemed to be having a problem starting a SD culture on account of high altitude.

I have never heard of altitude is a problem for SD, assuming enough air to sustain animal life.

It is simply a matter of making a paste or slurry of any kind of wheat flour, or rye even, adding some granules of dried SD culture, stirring, letting sit, and adding more flour and water when bubbling starts and so forth until a sufficient volume is obtained. Household temperatures are fine, but 85°F. is better. Any old jar will do as a container,loosely covered.

You can still get free dried starter for a SASE at http://carlsfriends.net and some uncomplicated instructions as well.