The Porcelain group belong to the Strongly Bolting category, where they prefer cold climates with cool/warm summers.  A genuine cold climate garlic (like the Rocambole) that will struggle in any climate with short winters or hot summers.

Strong, sharp flavours but most noted for their very small number of very large, very easy to peel cloves.

New to Australian market and I love them.

Garlic Type: Hardneck, Strongly Bolting
States:  ACT (elevated), VIC, TAS
Culinary Type: Stir Fry, Sauteeing, Slow Food, Roasting
Storage: 7-8 Months
Plant: Late-April to Late May
Harvest:  Mid Season
Bulb Shape:  Pointed tennis ball shape
Bulb Skin: Marbled white, some with touches of pink skins.
Cloves Number:  4-7 wedge-shaped cloves in single layer.  Clove colours vary from pale to strong pink tones.
Bulbils:  100-200 in scape.  Remove scape early to allow larger bulb.
Growing:  Develops 2 leaves before winter dormancy, and wants cool spring and warm summer to allow it mature. A tall plant with upright leaves separated by up to 5cm between leaf sets. Can develop 10-12 leaves with squatter growth.
Harvest:  Harvest at 4.5 green leaves in cooler, moist or humid soil conditions to maintain bulb skins, however in hot dry areas, plants can be left until almost fully dead before harvesting.