Here are some simple guidelines how to recognize fresh vegetables
Asparagus: Stalks should be tender and firm; tips should be close and compact. Choose the stalks with very little white, they are tenderer. Use asparagus soon because it toughens rapidly.
Beans Snap: Those with small seeds inside the pods are best. Avoid beans with dry-looking pods.
Broccoli, Brussels Sprouts and Cauliflower: Flowers clusters on broccoli and cauliflower should be tight and close together. Brussels sprouts should be firm and compact. Smudgy, dirty spots may indicate pests or disease.
Cabbage and Head Lettuce: Choose heads that are heavy for their size. Avoid cabbage with worm holes and lettuce with discoloration or soft rot.
Cucumber: Choose long, slender cucumbers for best quality. May be dark or medium green, but yellow ones are undesirable.
Mushrooms: Caps should be closed around the stems.
Peas and Lima Beans: Select pods that are well-filled but not bulging. Avoid dried, spotted, yellow, or flabby pods.