I remember now I tested it when I had cooked it thinly sliced with garlic and coconut milk as my alternative to dauphinois potatoes. It was either ok or inconclusive. It was boiled and mashed for the definite positive test.

At list it gave me a cause which is better than not knowing.

NSD almost all the way
No dairy hard cheeses occasionally and homemade ghee
Still trying to work out what makes me tick and what makes me drop

'Chew your drinks and drink your foods'
'Let your knife & fork do the work of your teeth and let your teeth do the work of your stomach'
Mahatma Gandhi