Passion and heritage has been passed down through the Bou Sleiman family for four
generations. When Joseph Bou Sleiman took over the reins at Château Oumsiyat, he
blended respect for local tradition with modern techniques to craft contemporary
wines. A passionate vine grower, Joseph also built a modern winery in the village of
Mtein, where he creates wines that are a fusion of Old World and New World. The
grapes are grown in the 78-hectare vineyard, situated at over 1,000 metres elevation in
the beautiful Bekaa Valley, between Mount Lebanon to the west and the Anti-Lebanon
Mountains to the east. The altitude, microclimate and soils combine in this ancient
terroir to produce fresh wines with a very Mediterranean “feel.”

The Bekaa Valley, located between the Mount Lebanon and Anti-Lebanon mountain ranges, is the heart of Lebanon’s wine industry and home to the country’s most important vineyards. Sitting at elevations of 900–1,200 metres above sea level, the region benefits from a Mediterranean climate with warm, dry summers and cool winters. The high altitude provides significant diurnal temperature variation, which helps retain acidity and aromatics in the grapes. Rainfall is confined mainly to the winter months, so drought and water scarcity can be challenges in some years, while occasional spring frosts also pose a risk.

The soils of the Bekaa Valley are varied but generally based on limestone, with areas of clay, gravel and alluvial deposits. These well-drained, mineral-rich soils are well suited to both international and indigenous grape varieties.

Red wines dominate production, with Cabernet Sauvignon, Syrah, Cinsault and Carignan widely planted. These produce rich, full-bodied wines with ripe black fruit, spice and herbal notes, often aged in oak for added complexity. Merweh and Obeideh are local white varieties, while Chardonnay and Sauvignon Blanc are also common for white wines, which tend to be fresh, aromatic and mineral-driven.

Key growing areas include Ksara, Kefraya and Baalbek, and leading producers such as Château Musar, Château Ksara and Château Kefraya have helped establish the Bekaa Valley’s reputation for distinctive, age-worthy wines.

Cabernet Sauvignon is one of the world’s most widely planted and celebrated red grape varieties, known for its deep colour, firm tannins, and remarkable ageing potential. Originating in Bordeaux, France, as a natural cross between Cabernet Franc and Sauvignon Blanc, it has become a global benchmark for structured, full-bodied red wines.

Viticulturally, Cabernet Sauvignon is a hardy, late-ripening grape that thrives in warm, sunny climates. It produces small, thick-skinned berries, contributing to its bold tannic structure and deep colour. The vine is relatively resistant to disease and adapts well to diverse soils, making it suitable for a wide range of terroirs.

Today, Cabernet Sauvignon is planted extensively across the world—from its French homeland in Bordeaux’s Left Bank, to California’s Napa Valley, Chile’s Maipo Valley, Australia’s Coonawarra, and South Africa’s Stellenbosch. It often forms the backbone of blends, particularly in Bordeaux-style wines, but also shines as a varietal expression.

Flavour profiles typically include blackcurrant (cassis), blackberry, mint, cedar, and tobacco, often developing notes of leather, earth, and spice with age. Styles range from fruit-forward and plush in warmer climates to structured and herbal in cooler ones. Cabernet Sauvignon’s power, elegance, and longevity make it a cornerstone of fine red winemaking worldwide.

Syrah, also known as Shiraz in Australia and parts of the New World, is one of the world’s most celebrated red grape varieties. Its origins trace back to the Rhône Valley in France, where it thrives in both the northern Rhône’s steep, granite slopes and the warmer southern regions. Syrah vines are hardy and adaptable, tolerating a range of soils, but they prefer well-drained sites with ample sunlight. The grape is naturally vigorous, with small, thick-skinned berries that produce deeply coloured wines rich in tannin and flavour.

Today, Syrah is planted widely across the globe. In France, it remains dominant in appellations such as Hermitage, Côte-Rôtie, and Crozes-Hermitage. In Australia, Shiraz is the country’s flagship variety, producing styles from bold, ripe Barossa bottlings to elegant, cool-climate Yarra Valley expressions. Significant plantings also exist in South Africa, the United States (notably California and Washington State), Chile, and Argentina.

The style of Syrah/Shiraz varies with climate and winemaking approach. Cool-climate examples offer notes of black pepper, violets, and fresh blackberry, with firm acidity and structure. Warmer regions produce richer, fuller wines with flavours of ripe plum, black cherry, chocolate, and spice. Across styles, Syrah is prized for its depth, versatility, and ability to age gracefully.

Tempranillo is one of the world’s great red grape varieties, most famously associated with Spain, where it is the backbone of iconic wines from Rioja and Ribera del Duero. Its name comes from temprano, meaning "early," reflecting its tendency to ripen earlier than other Spanish red varieties. Tempranillo thrives in warm, sunny climates with cool nights, which help preserve acidity and balance in the grapes. It grows best in chalky or clay-limestone soils and is known for its thick skins, moderate acidity, and firm tannins.

In Spain, Tempranillo is often blended with Garnacha, Graciano, or Mazuelo and aged in oak to produce wines with depth, structure, and ageing potential. Classic styles exhibit flavours of red cherry, plum, tobacco, leather, vanilla, and dried herbs. In warmer regions like Toro, it produces fuller-bodied, powerful wines, while in cooler zones like Rioja Alta, it shows more finesse and elegance.

Outside Spain, Tempranillo is grown in Portugal (as Tinta Roriz or Aragonez), where it contributes to both table wines and Port. It's also gaining traction in New World regions such as Argentina, California, Texas, and Australia, where winemakers appreciate its versatility and food-friendly character. Tempranillo’s appeal lies in its balance of fruit, spice, and structure.

Cinsault (also spelled Cinsaut) is a versatile red grape variety traditionally associated with the south of France, particularly the Languedoc and Provence regions. It thrives in hot, dry climates and is valued both as a blending grape and, increasingly, for varietal wines. Cinsault is also a key component in many rosés, including those from Provence, and has played a historical role in the wines of North Africa and Lebanon. It is one of the parent grapes of South Africa’s Pinotage, having been crossed with Pinot Noir.

The grape produces light- to medium-bodied wines with soft tannins and moderate acidity. Its aromatic profile is typically fresh and fruit-driven, offering notes of red berries such as strawberry and raspberry, alongside floral hints, spice, and occasionally a touch of earth or garrigue. When yields are controlled and vines are well-managed, Cinsault can produce elegant, perfumed wines with notable finesse.

Viticulturally, Cinsault is prized for its drought resistance and productivity, though it can suffer from poor fruit concentration if overcropped. Its large berries and thin skins make it susceptible to rot in humid conditions, so it is best suited to warm, dry climates. Today, it is seeing renewed interest in regions like South Africa, California, and Australia for fresh, low-intervention winemaking.