Coeliac-safe, gluten-free fundamentals

Gluten‑Free Diet Guide (Coeliac & Gluten Intolerance)

A practical, no-drama guide to eating gluten free safely: what to eat, what to avoid, how to avoid cross-contamination, and how to eat out with confidence.

Quick navigation
Start here
Your first week, simplified.
Safe foods
What you can rely on.
What to avoid
The big gluten sources.
Cross‑contamination
Home + restaurant risks.
Label reading
What to scan + what to ask.
Eating out
Questions that actually work.

Start here (the simplest safe plan)

If you’re coeliac (or highly sensitive), the goal isn’t “mostly gluten free” — it’s consistently gluten free, including avoiding traces from shared surfaces and fryers. Here’s the simplest way to get momentum in week one:

1) Reset your basics
  • Switch to naturally gluten‑free staples (see list below).
  • Replace high-risk basics: soy sauce, stock, sauces, spice blends.
  • If coeliac: consider a clean toaster + chopping board.
2) Pick 3 “default meals”
  • Breakfast: eggs + fruit / GF oats (certified) / yoghurt.
  • Lunch: rice bowl / salad + protein / leftovers.
  • Dinner: meat/fish + veg + potatoes/rice.
Note: Oats are naturally gluten free but often contaminated. If you’re coeliac, choose certified gluten‑free oats and re-check tolerance with your clinician.
Scan labels & menus with BiteRight (3‑day free trial) Newly diagnosed? Read this

Safe foods (naturally gluten‑free)

These are the “easy wins” — foods that don’t contain gluten in their natural form. The main risk is what gets added (sauces, coatings) or how they’re cooked (shared oil, shared utensils).

Proteins
  • Eggs
  • Fresh meat, fish, chicken
  • Beans, lentils
  • Tofu (check marinades)
Carbs & grains
  • Rice
  • Potatoes, kumara
  • Corn, polenta
  • Quinoa, buckwheat
  • Certified GF oats (if tolerated)
Fruit & veg
  • All fresh fruit
  • All fresh vegetables
  • Plain frozen fruit/veg
Dairy & fats
  • Milk, plain yoghurt
  • Cheese
  • Butter, olive oil
  • Nuts, seeds

What to avoid (the big gluten sources)

Gluten is found in wheat, barley, rye — and many foods made from them. Some are obvious. Some are sneaky.

Usually unsafe
  • Bread, pasta, pastries
  • Flour, breadcrumbs, batter
  • Most regular soy sauce
  • Beer (barley)
  • Seitan (wheat gluten)
Often risky (check labels)
  • Sauces, gravies, marinades
  • Stocks/broths
  • Sausages & processed meats
  • Seasoning blends
  • Anything “crumbed” or “crispy”
Coeliac rule of thumb: if you can’t confirm it’s gluten free, treat it as unsafe.

Want the biggest “hidden gluten” offenders? See Common Hidden Sources and search the Knowledge Hub.

Cross‑contamination (the part most people miss)

For coeliacs, tiny amounts matter. Cross‑contamination is where a lot of accidental gluten exposure happens — even when the ingredients are gluten free.

At home
  • Separate toaster (or toaster bags)
  • Clean chopping boards + colanders
  • Butter/jam contamination from crumbs
  • Shared utensils + bench tops
Eating out
  • Shared fryers (chips!)
  • Shared grills & sandwich presses
  • Sauces thickened with flour
  • “Gluten free” but prepared on shared surfaces

Label reading (what to scan + what to look for)

If you’re buying packaged food, you’re playing a game of “spot the ingredient + spot the manufacturing risk”. Label rules vary by country — but the patterns are predictable.

Fast label checklist
Tip: use BiteRight to scan ingredient lists and barcodes when you’re tired, rushed, or unsure. It’s designed to be strict in Coeliac Safe Mode.
Download BiteRight

Eating out (simple questions that get real answers)

Restaurants can be safe — but only when the kitchen can consistently avoid cross‑contamination. These are the questions that change outcomes:

Before you ask: scan the menu with BiteRight and go in with a shortlist.

Common gluten-free “gotchas”

Soy sauce
Most soy sauce contains wheat. Look for gluten‑free tamari.
Read guide →
Beer
Most beer is barley-based. “Gluten removed” isn’t the same as gluten free for everyone.
Read guide →
Oats
Only certified gluten‑free oats are a good start for coeliacs.
Shared fryers
If nuggets/onion rings go in, chips are risky.

Bottom line

A gluten‑free diet can be simple once you have defaults and a process:

Disclaimer: This page is educational and not medical advice. If you suspect coeliac disease, get tested before removing gluten from your diet.