4 Tips for Buying the Healthiest Vegetables
Jo Robinson, author of Eating on the Wild Side, shares her secrets for getting the healthiest varieties of veggies—wherever you shop.
By Emma Haak
![Cauliflower Cauliflower](/g/image-resizer?width=670&link=https://static.oprah.com/images/201306/omag/201306-omag-sow-1-284x426.jpg)
Cauliflower
Opt for purple Graffiti and green Romanesco cauliflower—they can contain twice the antioxidants as the white kind we commonly buy.
![Carrots Carrots](/g/image-resizer?width=670&link=https://static.oprah.com/images/201306/omag/201306-omag-sow-2-284x426.jpg)
Carrots
Say no to baby carrots. Since their outer layer is stripped away, they lose one-third of the antioxidants. Buy a bunch with the greens attached and cut them into sticks yourself.
![Onions Onions](/g/image-resizer?width=670&link=https://static.oprah.com/images/201306/omag/201306-omag-sow-3-284x426.jpg)
Onions
Go for the ones that bring on the tears. In a lab study, extracts from strong-tasting onions were more effective at killing liver cancer cells than those from mild onions.
![Asparagus Asparagus](/g/image-resizer?width=670&link=https://static.oprah.com/images/201306/omag/201306-omag-sow-4-284x426.jpg)
Asparagus
To test for freshness, rub two stalks together. If they squeak, buy 'em. Fresh asparagus still has a waxy coating that creates the sound.
Next: 5 foods that should never be in your grocery cart
Next: 5 foods that should never be in your grocery cart
From the June 2013 issue of O, The Oprah Magazine