Andrew,
Thanks so much for your encouragement and helpful advice. Appreciated!
You just need to get a Brown Swiss for your backyard, down there in South Australia! She is hand milked at 7am and 7pm daily, and has been going non-stop (due to a medical issue, she lost a calf, can't have any more) in her milk production for about SIX years. We get about 3-4 gallons of milk a day. A blessing from the Lord! Butter, cheese, yogurt, ice cream, custard, gelato, soap, all things dairy!
Thanks again for your help. If I'm brave enough to share, I'll post details of my next attempt!
Amy.