Cabernet Sauvignon and Sangiovese are both red grapes, both make serious, age-worthy wine, and both show up on nearly every steakhouse wine list in the country — which is probably why people mix them up more than almost any other pair of major red varieties. But taste them side by side and the differences are actually pretty easy to pick out once you know what you’re looking for.
Where each grape comes from, and why it matters
Cabernet Sauvignon is a relatively young grape as these things go — it emerged in 17th-century Bordeaux as a natural cross between Cabernet Franc and Sauvignon Blanc, of all things, and has since become the most widely planted wine grape on earth. It’s grown almost everywhere wine is made, from Napa to Chile to Australia to, yes, Temecula, and it adapts to a wide range of climates while still tasting recognizably like itself.
Sangiovese is much older and far more tied to a single place: it’s the principal grape of Tuscany, and specifically the backbone of Chianti, Brunello di Montalcino, and Vino Nobile di Montepulciano. Unlike Cabernet Sauvignon, Sangiovese is genuinely finicky about where it’s planted — it can taste completely different, and not always in a good way, outside of the specific climates it’s suited to. Its recent success in places like Temecula is a real story precisely because it’s not a grape that automatically travels well.
The structural difference: tannin vs. acid
This is the single most useful thing to know if you’re trying to tell these two apart blind. Cabernet Sauvignon’s defining structural feature is tannin — that drying, slightly gripping sensation on your gums and the sides of your tongue, especially in a young wine. Cabernet has thick skins loaded with tannin compounds, and that’s a huge part of why it’s such a good candidate for barrel and bottle aging: those tannins soften and integrate over years.
Sangiovese’s defining structural feature is acidity, not tannin. It’s a naturally high-acid grape, which gives Sangiovese wines that mouth-watering, almost tart sensation on the sides of your tongue rather than Cabernet’s drying grip. That high acidity is also exactly why Sangiovese is such a famously good food wine — it cuts through rich, fatty dishes (this is not a coincidence; Chianti and tomato-and-olive-oil-based Tuscan cooking evolved together) in a way that a big, tannic Cabernet sometimes can’t.
Flavor profile: dark and brooding vs. bright and savory
Cabernet Sauvignon tends toward dark fruit — blackcurrant, black cherry, blackberry — often layered with notes that come from oak aging: cedar, tobacco, baking spice, sometimes a green, herbal note (bell pepper or eucalyptus) from the grape itself, particularly in cooler-climate examples.
Sangiovese leans brighter and more savory: red cherry and red plum rather than black fruit, often with a distinctive dried-herb or earthy, almost tomato-leaf quality, and a characteristic note some tasters describe as similar to dried orange peel. It’s a fundamentally more savory, less overtly fruity profile than Cabernet — which is part of why Sangiovese-based wines are often described as more “food wines” than “sipping wines,” though a well-made one is plenty enjoyable on its own.
Color is actually a decent clue too
Pour them side by side and look at the glass before you even taste. Cabernet Sauvignon is typically a deep, dense, almost opaque purple-ruby, especially young. Sangiovese is noticeably lighter and more translucent, often closer to a garnet or brick-red color even in a full-bodied example. It’s not a perfect tell on its own, but combined with the tannin-versus-acid difference, it’s a strong first clue.
Why Temecula makes an interesting case study for both
Temecula’s hot-days, cool-nights climate happens to suit both grapes, which makes it a genuinely useful place to taste them side by side and actually learn the difference — you’re not comparing a Napa Cabernet to a Tuscan Sangiovese grown 6,000 miles apart under completely different conditions, but two wines grown a few miles apart, dealing with the same sun and the same evening marine breeze. Whatever differences you taste are much more about the grape itself than about the place.
We make both: our Sangiovese Super Tuscan, built in the bright, savory, high-acid style the grape is known for, and our Reserve Cabernet Sauvignon, built for the structure and aging potential Cabernet is known for. Tasting them back to back is one of the more genuinely educational flights we pour.
The short version
If you’re trying to identify which one is in your glass: check the color first (deep purple leans Cabernet, lighter garnet leans Sangiovese), then pay attention to whether your mouth feels dry and gripped (tannin, Cabernet) or watering and tart (acid, Sangiovese). Once you’ve tasted the difference once, it’s hard to confuse them again. Come try both and see for yourself.