True North Black Onyx (formerly Black Market) - Australian - Black Angus Porterhouse. MB4/5 Grain-Fed

A premium Australian Black Angus porterhouse from True North Black Onyx, delivering a well-balanced combination of tenderness, flavor, and visual impact. Formerly known as Black Market, this program is recognized for producing consistent, high-quality grain-fed beef with reliable marbling and strong eating performance.

With MB4/5 marbling, this porterhouse offers a satisfying level of intramuscular fat, enhancing both sides of the cut — the tenderloin for softness and the striploin for bold, beefy character.

What you're getting:

MB4/5 marbling – moderate-to-high fat for improved juiciness and tenderness
Grain-fed Angus – consistent quality and flavor development
Black Onyx program – premium Australian beef with proven lineage
Porterhouse cut – combination of tenderloin and striploin in one steak

Why it stands out:

Two premium cuts in one — tenderloin + striploin
Balanced marbling across both muscles for even cooking
Strong steakhouse presentation and versatility

Ideal for:

Grilling or reverse searing
Large-format steaks for sharing
Cast-iron finishing
Special occasions or centerpiece meals

Flavor & texture notes:

Tender, buttery texture from the filet side
Bold, beefy flavor from the striploin side
Juicy, balanced finish with moderate richness

This is a classic porterhouse done right — combining tenderness and flavor in one cut, backed by a consistent and well-established Angus program.