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    Home » At the Store » Fruit & Vegetables » Why are the Grapes I Buy at the Store Sour? Can I Make Them Sweet?

    Why are the Grapes I Buy at the Store Sour? Can I Make Them Sweet?

    Published: Apr 18, 2015 · Modified: Jun 19, 2018 by Eric Samuelson

    Can Sour Grapes Get Sweet? Can you ripen grapes at home to make them sweeter?

    Disclaimer: Some of the links you will find below are affiliate links, meaning that at no additional cost to you, I will earn a commission if you click through and make a purchase. Cookies will be used to track the affiliate links you click.

    All of us have experienced this.

    We go to the store, pick out what looks like a perfectly fine bags of grapes. The grapes come home with us.

    We clean them off, excited to eat them, and then boom, we are stopped right in our tracks, with the disappointment of having just tasted a sour grape. You hope it's only a fluke, only to realize that after several test subjects fail, that you are now an owner of a bag of sour grapes.

    How could this happen? The sign at the store promised that these grapes were sweet - how could a grocery store sign let me down. Be assured that your disappointment did not begin in the grocery store, but out in the field - where profit often trumps flavor and sweetness.

    Why are My Grapes Sour

    Why Grocery Store Grapes are Sour

    There are several factors that play into why grocery store grapes are so inconstient - sometimes sweet, sometimes sour, sometimes flavorful, often times not. Grapes are picked when they appear ready, even if they haven't reached their peak levels of sugar and flavor. They quicker they are picked, the quicker money can be made. If the sign and appearance of the grape is there, then it's removed from the vine. Often growers remove all the grapes at once. Problem is that not all bunches are ready at the same time. It takes a skilled picker to determine which grapes are perfect, and which need more time. That requires more money on the part of the grower to pack more skilled workers and to spend time go back over the same vines. It's cheaper to pay someone to pick them all and move on.

    Brand Recognition

    People buy grapes while disregarding brands. I have seen companies put more effort in recent years to make more attractive packaging with names on it that customers will remember. But I don't think it's getting through to the customer. Stores cycle through so many grape brands from day to day that sometimes it's hard to find the same one in back to back trips. The grape industry is far away from being as recognized as say the Halos and Cuties of the citrus world. You can choose to be a smart consumer and keep track of the brand you buy. Take a moment to look over the bag, not just grab and eat. Where do they come from? What company? And when you find something like, save the bag. Maybe cut out the logo and tap it to a piece of paper you keep on the fridge.

    Marquis Grapes

    Different Varieties of Grapes

    Red, black, and green are the most we normally see on signs of grapes. We don't see Sugarone, Thompson, Crimson, Autumn Royal, etc. We often do not know which type of grape were are getting. These grapes all have different levels of sweetness and different flavors. Some are more likely to be sour when picked too early. Some varieties are sadly grown not for flavor, but for profit alone.

    [irp posts="24388" name="What are Tear Drop Grapes?"]

    Can I Make Grapes Sweeter

    Grapes ripen on the vine. They don't get sweeter off the vine, they just rot. It's not like a banana that sweetness as it matures. Once the grape is picked, it's as sweet as it's going to get. You could put sugar on the grapes, but that just seems wrong to me. The best advice I can give you to make sure you don't experience again is taste the grapes first. Any store that won't allow you to taste the grapes is not a store worth shopping at. Over the years I have become more bold, so I don't mind going for a sample myself. Grapes are the easiest fruit to sample in the store. It's not like taking a bite out of a watermelon (but if I wanted to, I would ask the nearest produce worker).

    Cotton Candy Grapes with Bag

    Yes these grapes really taste just like Cotton Candy!

    A Grape Growers to Watch Out For

    Anyone that regularly reads my blog, knows I am a huge fan of Grapery. They are a grape grower out of Bakersfield, California. To me they produce the best tasting grapes I have ever tasted. A lot of people already know about their Cotton Candy grapes - which actually do tastes just like Cotton Candy. They also offer their Flavor Promise grapes, that they promise will never disappoint you or your money back.

    [irp posts="24011" name="Cotton Candy Grape Mailing List"]

    When All Else Fails, Grow Grapes Yourself!

    If you are interested in growing your own grapes, or you already do and would like some tips, make sure to check out the book "The Organic Backyard Vineyard - A Step by Step Guide to Growing Your Own Grapes". I also have a post I wrote about what varieties of grapes are good to grow at home.

    When All Else Fails, Eat Raisins!

    Hey if growing grapes doesn't work for you and you can't get any good store bought grapes, buy some raisins. Perfect for taking on the road. I wanted to share with you a few unique raisins you could consider

    • Anthony's Black Maroo Raisins - I love large, plumb, juicy raisins. Black Maroo is a black grape variety that produces large, sweet, seedless grapes.
    • Sunview Seedless Medley - I got to say I am sucker for variety of anything. I grow different colors peas in my garden since I love variety so much. So whenever I see a medley of raisins, gotta to have them.
    • Basse Golden Raisins - Golden Raisins are pretty and good. I prefer them in my salads to other types.
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    Reader Interactions

    Comments

    1. Thomas Mork

      September 04, 2018 at 1:36 pm

      I live in Minnesota so grape with good sweetness special in winter can be nearly impossible.Then I 'll buy grapes that are awsome so your way rite the cosistancy,,,,well there is NONE, and up here there exspensive.PleaseHelp a fellow lover of grapes where are the Cotton candy grapes grown by Grapery up here in the Nations Ice Box? P.s I was born in Santa Maria California and grew up in Bakersfield across from a 300+acre vinyard, and yes as kids we knew when to go graping, we also knew the farmer his family ECT so we worked for those delicious premium Wine grapes.I taste test 2 but sometimes go by looks alone,most of the time the grapes from South America are yummier than US grown but I refrain from partaking if it canbe helped because the pesticides and herbicides are un regulated and some are illegal here because of health concerns and DDTs that killed off almost all of our Bald Eagles back in the 60s and 70s were still being used,, so I heard but don't believe it. Thanks and help

    2. Chris

      March 26, 2019 at 8:42 pm

      Hi,
      I live in Queensland, Australia and our local supermarket has unripe Aussie grapes 8 months a year often, the other months they sell US grapes which I don’t buy as I only buy Aussie fruit, interesting to hear the comment that South American grapes are better than US. I too would not buy them as your farmers like ours need support I just wish our store was more concerned with selling riper grapes because they will sell more.

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    Nice to Meet You,

    Hi! I'm Eric : Father of 4, living just south of Ann Arbor, MI. I'm a reformed picky eater finding a new way to not conform. Eating what's in season is my jam (I also make it!)

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