Kyria Maria used a shoulder of nanny goat, or what she referred to as mother goat, roughly cut into chops, so she had to boil it first to tenderise it and remove some of the fat. She usually boils it for about 45 minutes, then leaves the boiled goat in the broth to keep it soft until she needs to use it.
In Australia, goat tends to be much younger, smaller and leaner and so can be cooked for a much shorter time. For a small goat (approx. 8.5 kg whole goat), ask your butcher to cut the leg and shoulder into thick chops. Otherwise, just halve the quantities and use either shoulder or leg chops. Lamb can also be substituted.