True Essentials Guide
Safe Materials — What to Look For
The material a product is made from determines its chemical safety at least as much as any ingredient list. This guide covers every material True Essentials tracks, with honest assessments of where each excels and where it falls short.
Stainless Steel
Surgical-grade 18/10 stainless steel is one of the safest materials for food contact. It contains no synthetic coatings, does not react with acidic foods, and is virtually indestructible. Look for 304 (18/8) or 316 grade for the best corrosion resistance.
Strengths
No chemical coatings. Extremely durable — lasts decades. Dishwasher safe. Does not leach into food. Recyclable.
Watch For
Does not have natural non-stick properties. Requires some fat or oil when cooking. Can discolor with high heat.
Best Used For
Cookware, water bottles, food storage, utensils, lunch boxes.
Cast Iron
Properly seasoned cast iron is a natural non-stick surface that improves with use. It contains no synthetic coatings, is nearly indestructible, and can add small, beneficial amounts of iron to food.
Strengths
No synthetic coatings. Improves with age. Exceptional heat retention. Naturally non-stick when well-seasoned. Can last generations.
Watch For
Heavy. Requires seasoning and hand washing. Reacts with acidic foods (tomatoes, citrus) during long cooks.
Best Used For
Skillets, Dutch ovens, grill pans, baking pans.
Ceramic
True ceramic cookware contains no PFAS, PTFE, or synthetic coatings. It is chemically inert and non-reactive. Note: always verify products are lead and cadmium-free, as some ceramic glazes historically contained both.
Strengths
No PFAS or PTFE. Non-stick surface. Lighter than cast iron. Easy to clean.
Watch For
Non-stick properties degrade faster than PTFE. Not all ceramic is equal — look for NSF certification. Some ceramic-coated pans are just conventional pans with a thin ceramic layer.
Best Used For
Non-stick skillets, bakeware, casserole dishes.
Glass
Borosilicate glass is one of the purest materials for food contact. It is completely non-reactive, leaches nothing into food or beverages, and does not absorb odors or flavors.
Strengths
Completely inert — no chemical migration. Does not absorb odors or stains. Dishwasher safe. Recyclable. You can see what's inside.
Watch For
Heavier than plastic. Breakable. Not suitable for stovetop unless specifically rated.
Best Used For
Food storage containers, water bottles, baking dishes, drinking glasses, baby bottles.
Silicone
Food-grade silicone is made from silicon and oxygen — naturally occurring elements. High-quality platinum-cured silicone is stable at cooking temperatures and contains no BPA, PTFE, or phthalates.
Strengths
Flexible and lightweight. Heat-resistant. No BPA or PTFE. Easy to clean. Good for baking molds.
Watch For
Quality varies significantly. Lower-grade silicone may contain fillers — the "twist test" (twist and look for white streaks) helps identify filler-laden products. Not all silicone is food-grade.
Best Used For
Baking molds, spatulas, storage bags, baby items, ice cube trays.
Bamboo
Bamboo is one of the fastest-growing renewable materials on earth. It is naturally antimicrobial and does not require chemical pesticides to grow. The key caveat: look for products using non-toxic adhesives.
Strengths
Rapidly renewable. Naturally antimicrobial. Lightweight. Does not scratch non-stick surfaces.
Watch For
Some bamboo composite products use formaldehyde-containing adhesives. Not dishwasher safe — warps with prolonged moisture. Quality varies by manufacturing origin.
Best Used For
Cutting boards, utensils, bowls, serving boards.
Organic Cotton
Organic cotton is grown without synthetic pesticides or fertilizers. Certified by USDA Organic or GOTS, it is softer on skin, free from chemical residues, and produced with significantly lower environmental impact than conventional cotton.
Strengths
No pesticide residues. Certified supply chain. Softer with repeated washing. Better for sensitive skin.
Watch For
More expensive than conventional cotton. "Organic" without certification is a meaningless claim — always verify GOTS or USDA Organic.
Best Used For
Bedding, towels, baby clothing, reusable bags, personal care items.
Wool
Natural wool is inherently flame-resistant without chemical flame retardants — making it an excellent choice for mattresses, bedding, and children's products. Look for GOTS-certified organic wool to ensure no harmful dyes or processing chemicals.
Strengths
Naturally flame-resistant — no chemical retardants needed. Temperature-regulating. Naturally moisture-wicking. Durable.
Watch For
More expensive. Requires special care. Some people have wool sensitivity. Non-organic wool may be treated with pesticides.
Best Used For
Mattresses, mattress toppers, bedding, baby products, insulation.
BPA-Free Plastic
BPA-free plastics replace bisphenol A with alternative compounds (BPS, BPF, or other bisphenols). This is a meaningful step forward from conventional plastic, but early research suggests some BPA substitutes may have similar hormonal activity.
Strengths
Better than standard plastic for food contact. Widely available. Lighter and more durable than glass.
Watch For
BPA substitutes (BPS, BPF) may have similar endocrine-disrupting properties. Still petroleum-derived. Still sheds microplastics with wear. Not a long-term solution for food contact.
Best Used For
When glass or stainless steel are not practical — outdoor use, children's items where breakage is a concern.