Pomelo? I know that one well.

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Pomelo

Citrus maxima

Zones 9–13

Growing

Because pomelos are a primary ancestor to many common citrus varieties, including the grapefruit and bitter orange, they possess a robust genetic lineage. When growing your own, you can start from seed or use grafted nursery stock. If you are working with a limited space, this species grows well in a container, provided you ensure the soil is not waterlogged and maintains a pH between 5.5 and 7.5. Since even a light frost can kill the tree, it is vital to plant in a location that offers protection or to move containers indoors if temperatures drop.

Unlike many other fruits, a single pomelo tree is capable of setting fruit on its own without needing a second tree for pollination, and the blossoms are excellent for attracting pollinators to your garden. When the fruit reaches maturity, you must harvest it while it is ready to use, as the pomelo does not continue to ripen once it has been picked from the branch. To keep your harvest fresh, store the fruit unwashed at room temperature or in a cool, dark cellar.

Stats
Sunfull sun
Watermedium
Grow time>150 days
Height>6ft
Spacing>24in
Light
Full sun✓
Part shade✓
Shade✗
Traits
Life cycleperennial
Categorytree fruit
Growth habittree
Seasonwarm
Frost tolerancetender
Heightover 6ft
Spacingover 24in
Days to maturityover 150
Growing
Watermedium
Drainagewell drained
Soil ph min5.5
Soil ph max7.5
Propagation
Seed✓
Cutting✗
Division✗
Graft✓
Tuber bulb crown✗
Transplant✗
Container ok✓
Pollinationself fertile
Pollinator friendly✓
Toxic parts
Leaves✗
Seeds✗
Raw✗
Post harvest
Wash before storing✗
Ripens off plant✗
Curing daysnone
Shelf life1–4wk
Storage methods
Room temp✓
Cool dark✓
Fridge✓
Freeze✓
Can✓
Dry✓
Ferment pickle✓
Blanch before freezing✗
Calendar, zone 7
Not suited to zone 7. Grows in zones 9–13.