Hi Kevin - The place for Cabernet is Stellenbosch and perhaps the most highly rated Cab winery is Kanonkop Estate. They only grow red wine, they have a 100% Cabernet and a Bdx Blend (70% Cab) named Paul Sauer that gained the first ever 100 points from Tim Atkin MW in his annual SA ratings for the 2015 vintage.
Best Pinot is probably to found in the Hemel in Aarde Valley. Hamilton Russell were the first there and following their success others have opened along the one road that goes through the valley.
There are more wineries than you could possibly visit within an hours drive from CT. Allow an hour to get to Stellenbosch region, 2 hours to get to Hemel in Aarde
Take the N2 motorway out of CT - great care must be taken as the motorway splits as you leave CT and it’s easy to be in the wrong lane unable to change with volume of traffic and very short notice given.
When you see sign for Stellenbosch that’s the R44, exit and head left, you’ll soon start hitting wineries. Kanonkop is on the R44 after the town of Stellenbosch; it’s on the right marked by wine trail sign and with a cannon on white pillar at entrance.
For Hemel in Aarde continue on N2, it ceases to be a motorway after the R44 junction and speed limit drops from 120Kph. Keep going. You go up the steep mountain ahead of you on Sir Lowrys Drive (look out view at top right - mind the baboons), over plateau and down again. Now you can continue to Caladon and turn right R316 follow signs to Hermanus R320. You’ll be going down the valley. Creation Wines will be one of the first wineries and they make cracking Pinots.
But I’d suggest going the other way. After descending plateau exit N2 at Bot River onto R43 and follow that towards Hermanus. Before Hermanus there’s traffic lights and the end of R320. A short way up, on the right, is Hamilton Russell. But on that corner is a small shopping mall with arguably the best wine store in the Cape - Village Wines. They have a huge selection at competitive prices and they can give useful advice. Also there’s coffee shops and restaurants in the complex.
But before you go I strongly suggest you getting Platters 2019 South African Wine Guide. It’s an encyclopaedia, with more than 8,000 wines from 900+ producers reviews. Details such as opening times and maps of wineries. That will give you the wineries you want to focus on
Also, you probably know this, but they drive on the correct side of the road in South Africa, so take care when turning right as you have to cross a lane. If there’s no other cars around it’s easy to end on the right (or as we say) the wrong side of the road
Lock your car doors and close windows for safety and always when baboons are present. Expect to find people crossing motorways, and riding bicycles. Keep to speed limits as there are a lot of hidden speed cameras and the first you’ll know is when the car rental company charges your credit card a couple of months after your return.
Any more, just PM me.
BTW if you visit Kanokop you must try their excellent Pinotage, they have some of the oldest vines and they will have an open 10 year old for tasting