Q: What is a corm and how does it differ from a bulb?
With August comes Winter’s last hurrah; the skies get clearer, the days warmer and the heart warming casseroles, sausages, roasts and stews begin to give way to fresher, lighter dishes. So, before the turn of the seasons calls for lighter, healthier Spring menus- why not make the most of the earthy, rustic flavour (and the cost-efficiency) of this season’s bulbs, roots, tubers and corms.
CELERIAC: aka Celery Root
Classification: root
Availability: all year, best Mar – late Sept
Market Update: quality is currently good and price steady
Appearance: creamy brown, knobby tuber with white flesh
Flavour: rich texture & slightly smoky flavour – cross between celery and parsley
Preparation: don’t wash until use, peel tough outer layer. Think remoulade, soups, chips, or as a side (boiled, steamed, mashed). Raw they are often grated in salads (use lemon to prevent discolouration after cutting)
Health Benefits: good source of dietary fibre and Vit C
FENNEL:
Classification: bulb
Availability: generally Mar- Nov, best Jul-Sept
Market Update: large fennel bulbs are one of our best buys this week- good supply, good quality and well priced
Appearance: firm, crisp white- light green bulb made up of overlapping stems
Flavour: light, slightly sweet aniseed flavour
Preparation: every part of a fennel plant is edible. The leaves have a stronger flavour
Health Benefits: good source of fibre, Vit C, folate, potassium, manganese and beta-carotene as well as phytochemicals and flavonoids
BABY FENNEL:
Classification: bulb
Availability: Mar – Sept
Market Update: Supply and quality good- prices fair
Appearance: small fennel bulbs
Flavour: slightly richer aniseed flavour than regular fennel. Leaves are stronger, base is sweeter and less pungent
Preparation: both leaves and base are edible. Fantastic in Mediterranean dishes, they are compatible with sweet and salty flavours. Think salads, soups, casseroles, fish dishes
Health Benefits: good source of fibre, Vit C, folate, potassium, manganese and beta-carotene as well as phytochemicals and flavonoids
GARLIC:
Classification: bulb
Availability: local season: October-May
Market Update: good supply and quality, currently imported from Mexico, Argentina and China
Appearance: vary in colour from white to pink to purple
Flavour: distinctive, pungent and aromatic
Preparation: preparation technique heavily influences the garlic experience. Break down the cells more and you get a more intense flavour (i.e. crushed is much more intense than slicing)
Health Benefits: natural antibiotic, also assists in management of blood pressure & cholesterol
JERUSALEM ARTICHOKE:
Classification: tuber
Availability: best June – Sept
Market Update: steady supply and quality good, prices at standard levels
Appearance: light brown skin, crisp white flesh
Flavour: nutty, rich, sweet
Preparation: can be eaten raw or cooked as per other tubers ( baked, chipped in soups, salads, stir-fries). Once peeled coat with lemon water to prevent browning
Health Benefits: suitable for diabetics and large amounts of iron, good source of dietary fibre provides some folate and potassium
ONIONS:
Classification: bulb
Availability: all year
Market Update: brown onions are great buying at the moment, quality, supply & price good across all lines
Health Benefits: rich in antioxidants, red varieties are also good sources of Vit C and dietary fibre
BROWN:
Appearance: golden brown skin with cream white flesh
Flavour: strong onion flavour
Best use: retains flavour under heat therefore great for cooking
RED: sometimes called Spanish onions
Appearance: red-purple skin with white, red-streaked flesh
Flavour: sweeter than brown, can still have a pungent onion flavour
Preparation: raw in salads or cooked
WHITE:
Appearance: white skin and flesh
Flavour: mild onion flavour
Preparation: raw in salads or cooked
SALAD ONIONS: red or white
Appearance: immature small bulbs on a green stem
Flavour: mild, sweet onion
Preparation: the salad onion
BLACK SALSIFY: aka black oyster plant
Classification: root
Availability: generally all year, best autumn/winter
Market Update: quality good, price steady
Appearance: long, slim root with black bark like skin and white flesh
Flavour: creamy, earthy taste some compare to oyster or artichoke
Preparation: wear gloves to avoid staining hands, peel then coat immediately with lemon/vinegar water to prevent browning (often easier just to peel after boiling then prepare as desired).
Health Benefits: particularly good for diabetics, good source of fibre, manganese, potassium, riboflavin, Vit B6 & C
TARO:
Classification: corm
Availability: different for each variety but usually best May-Aug
Market Update: good quality available and prices steady
Appearance/Flavour/Preparation: for more information on Taro varieties click here
Health Benefits: 3 times the dietary fibre of potatoes, low GI, excellent source of potassium, good amounts of Vit A & C, as well as some calcium and magnesium
To find information on more root and tuber varieties- such as ginger, galangal, jicama, horseradish – click here or explore our blog- www.sgssydney.com.
A: A corm is an underground, swollen stem that houses a plant’s food stores allowing it to endure periods of shortage (such as winter). While they may appear strikingly similar to their bulbous comrades, corms are very different internally- being made up of tissue housed in a thick skin (called a tunic) in contrast to the layered structure of modified leaves seen in a true bulb. If you’re ever in doubt cut it open, a corm will be solid inside whereas a bulb will have discernable layers. Interestingly, bananas are a corm- often mistaken for a tree, banana fruit is actually produced on a pseudostem, which.. you guessed it… grows from a corm.