READ THE DIAGRAM
Sea breeze corridors and location at the foot of mountains
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Schematic diagram showing the relationship between sea, mountain foothills, and slopes. This does not represent actual topography, wind directions, or temperatures. To the supporting reference ↓
FIELD NOTE 01
Between mountains and sea
In Stellenbosch, mountains and winds from False Bay create vineyard conditions. Warm summers aid ripening, while sea breezes temper excessive heat. Even within the same district, dividing sites exposed to wind from more inland locations makes it easier to compare Cabernet styles.
FIELD NOTE 02
Read the slope.
Check the map for mountain names like Helderberg and Simonsberg. Soil, elevation, and slope direction should be considered together. Don’t determine aromas from geological name alone; understand the vineyard through factors like drainage, water retention, and ripening progression.
FIELD NOTE 03
Deepening understanding through blends
We compare single-variety Cabernet and Bordeaux blends, and review the roles of Merlot, Cabernet Franc, and others using study materials. Since Pinotage and white wines are also produced, Cabernet serves as an entry point to the entire region and should not be considered the sole grape variety.
FIELD NOTE 04
Connecting the mountain name to vineyard location
In Stellenbosch, observe the relationship between mountains such as Simonsberg, Helderberg, and Stellenbosch Mountain and the foothills. WOSA describes the diversity of soils related to granite hills and foothills, and mountain areas with sandstone. Even within the same district, there are vineyards with different conditions, making it difficult to sum up 'Stellenbosch soils' with just one type.
Rather than directly connecting a soil name to a specific aroma, confirming the available water to roots, drainage, slope orientation, and exposure to wind better explains the conditions for fruit development.
Basis for this section:WOSA|South African Soils ↗
FIELD NOTE 05
Differentiate distance from the sea and prevailing wind paths.
WOSA's explanation of Polkadraai Hills highlights the cooling effects of Table Bay and False Bay. In addition to the straight-line distance to the sea on a map, it is important to confirm how mountains and valleys channel the wind. Even if vineyards are similarly close to the sea, elevation, slope, and wind-blocking geography will differ.
This diagram shows a conceptual relationship. It does not provide actual wind direction or temperature measurements, so you cannot read specific temperature differences or harvest dates between the two vineyards from the figure.
Basis for this section:WOSA|Polkadraai and Ocean Influence ↗
FIELD NOTE 06
W.O. and blends are separate pieces of information
W.O. district or ward provides clues about the scope of origin. A district indication such as 'Stellenbosch' alone does not specify the proportion of Cabernet, barrel use, or whether it is from a single vineyard. When comparing two bottles from the same appellation, record blends and harvest years separately. When you come across a narrower place name, confirm whether it is the official name of an area, a vineyard, or a brand to reduce misreading of resources.
Basis for this section:WOSA|Wine of Origin scheme ↗
Insufficient. Sea breezes, mountains, slopes, and soil also influence ripening conditions.
PAUSE & REFLECT
Check your understanding.
Can Stellenbosch Cabernet be explained solely by strong sunlight?
Read the explanation +
Insufficient. Sea breezes, mountains, slopes, and soil also influence ripening conditions.
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Pinotage: History of Crossing and the Making of Red and Rosé Wines →
Sources and reference materials
These are the reference materials for the main text. For details of production regulations, consult the current documents. For individual wine specifications, refer to materials for the relevant vintage.
- Stellenbosch Cabernet: Mountain and ocean influences ↗
- WOSA:Winelands of South Africa ↗
- WOSA|South African Soils ↗
- WOSA|Wine of Origin scheme ↗
- WOSA|Polkadraai and Ocean Influence ↗