Soy Milk Brands Compared: Edensoy vs. Silk vs. Westsoy vs. Pacific Foods
Our best milk for coffee guide treats “soy milk” as one entry in a seven-milk table, naming Unsweetened Edensoy Organic as the Ingredient-Honest-clean pick and Silk as the common fail — the right call for an overview page, but it flattens a real brand-by-brand story into one line. This is that story in full. We checked four unsweetened soy milks against our Ingredient-Honest Registry: Edensoy, Westsoy, and Pacific Foods all pass on nothing but water and organic soybeans, while Silk — the brand most people actually buy — carries an added gum and an unspecified “natural flavor” that trip it on two separate criteria. Real cost per cup and calories below, re-verified for this piece against current (October 2026) multi-retailer pricing, not carried over from an older figure.
The Four Brands, Compared
| Brand | Cost / cup | Calories / cup | Ingredients | Ingredient-Honest Verdict |
|---|---|---|---|---|
| Edensoy Unsweetened Organic | ~$1.44 | 120 | Filtered water, organic soybeans | Pass |
| Westsoy Organic Unsweetened Plain | ~$1.06 | 90 | Organic soymilk (water, organic soybeans) | Pass |
| Pacific Foods Organic Unsweetened Soy | ~$1.00 | 100 | Water, organic soybeans | Pass |
| Silk Unsweetened Soymilk (Organic) | ~$0.52 | 80 | Organic soymilk (filtered water, organic soybeans), vitamin/mineral blend, sea salt, gellan gum, ascorbic acid, natural flavor | Fails |
A sourcing note on these numbers: all four cost figures are freshly re-researched for this article against current multi-retailer pricing (Walmart, Kroger, Target, Instacart, and natural-foods co-ops), not copied from an older site figure. Worth flagging directly, the same way our Almond Milk piece flagged a real Elmhurst correction: Edensoy’s own per-cup economics follow the identical pattern Elmhurst did in that almond research — it’s sold in a smaller 32 fl oz bottle at a genuinely premium price (roughly $5.49-$6.49 at typical retail) rather than the 64 fl oz half-gallon size Silk comes in, which works out to ~$1.44/cup, not the ~$0.47/cup generic “soy, unsweetened” figure that appears in our best milk for coffee guide’s seven-milk table — that figure is accurate for Silk specifically, not for Edensoy, and the two shouldn’t be read as interchangeable. Edensoy’s higher calorie count (120 vs. the 80 most people expect) comes from the same cause: more real soybean content per bottle, not an added ingredient. One honest gap worth naming: Pacific Foods’ single-carton pricing was inconsistently listed across retailers during this research — most listings online showed only bulk 12-pack case pricing (commonly $82-$85/case, or roughly $6.80-$7.10/carton at that rate) rather than a clean single-unit shelf price. Co-op wholesale pricing put a single carton closer to $3.19-$3.99, and that’s the range our ~$1.00/cup figure is built from; treat it as the best available estimate rather than a fully pinned number, and expect it to vary more by retailer than the other three brands here.
Edensoy Unsweetened Organic
What’s in it: Filtered water and organic soybeans. Two ingredients, full stop — the same “clean by doing less” pattern Elmhurst uses in the almond category.
Ingredient-Honest verdict: Pass, and the cleanest ingredient list of the four by count.
Cost and calories: ~$1.44/cup, 120 calories/cup — the priciest and most calorie-dense of the four, for the same reason Elmhurst runs high in almond milk: more real soybean content per bottle, sold in a smaller premium-tier bottle rather than a standard half-gallon.
Westsoy Organic Unsweetened Plain
What’s in it: Organic soymilk (water, organic soybeans) — nothing else. We specifically checked whether Westsoy splits the way Califia’s almond milk does (an organic SKU that passes next to a non-organic SKU that doesn’t) and didn’t find a non-organic “Unsweetened Original” carrying a gum or oil — every retail listing we checked for Westsoy’s unsweetened line used this same two-ingredient formula.
Ingredient-Honest verdict: Pass.
Cost and calories: ~$1.06/cup, 90 calories/cup — a genuine middle option, and worth flagging on nutrition specifically: Westsoy’s own label lists 4g of dietary fiber per cup, noticeably more than the other three brands here, since it’s a less-filtered extraction that retains more of the whole bean.
Pacific Foods Organic Unsweetened Soy
What’s in it: Water and organic soybeans — the same two-ingredient pattern as Edensoy and Westsoy. Worth naming directly: Pacific Foods also sells an “Ultra Soy” line (cane sugar, gellan gum, locust bean gum, natural flavor) that is a different, sweetened product from a different part of the same brand’s shelf — the “Organic Unsweetened” label on the carton is what you’re checking for, the same “read past the brand name” warning our Almond piece gives for Califia.
Ingredient-Honest verdict: Pass.
Cost and calories: ~$1.00/cup, 100 calories/cup — the cheapest of the three Pass brands here, though see the sourcing note above on why this figure carries more pricing uncertainty than the other three.
Silk Unsweetened Soymilk
What’s in it: Organic soymilk (filtered water, organic soybeans), a vitamin/mineral blend, sea salt, gellan gum, ascorbic acid, and natural flavor. Worth noting plainly: the soymilk base itself is labeled organic — this isn’t an organic-vs-non-organic split the way Califia’s almond milk is. The gum and the unspecified flavor line are what trip it, not the soybean sourcing.
Ingredient-Honest verdict: Fails, on two separate criteria: gellan gum is an added stabilizer (Criterion 4), and the unspecified “natural flavor” line fails Criterion 5 on its own. Two separate failing ingredients, same pattern as Silk’s almond and oat lines.
Cost and calories: ~$0.52/cup, 80 calories/cup — by far the cheapest of the four, sold in a standard 64 fl oz half-gallon rather than any of the other three brands’ smaller 32 fl oz bottles, which is most of why the per-cup gap against Edensoy specifically is as wide as it is.
Which One Should You Actually Buy?
- Cleanest ingredient list, don’t mind the price: Edensoy — two ingredients, though you’re paying the most and getting the most calories of the four.
- Best balance of clean ingredients and reasonable cost: Pacific Foods Organic Unsweetened Soy — the cheapest of the three Pass brands, with the caveat that its pricing was the least consistently listed of the four in this research.
- Most fiber, still clean: Westsoy — 4g/cup, noticeably more than the other three, at a mid-range price.
- Cost is the only thing that matters, ingredient sourcing isn’t a priority: Silk, at ~$0.52/cup, is less than half the price of any Pass brand here — but it’s also the one that fails our standard, on two separate ingredients.
- Already have Silk in the fridge and want to switch: any of the three Pass brands is a straightforward swap — same unsweetened soy category, same volume conventions, no recipe adjustment needed beyond price and calorie math.
FAQ
Is Silk soy milk actually organic?
Yes — Silk’s Unsweetened Soymilk lists “organic soymilk (filtered water, organic soybeans)” as its base. The reason it still fails our Ingredient-Honest standard isn’t the soybean sourcing; it’s the added gellan gum and unspecified “natural flavor” layered on top of that organic base.
Why is Edensoy so much more expensive per cup than Silk?
Mostly bottle size, not ingredient cost. Edensoy sells in a 32 fl oz bottle at a premium price point, while Silk sells in a standard 64 fl oz half-gallon at a lower per-ounce price — the same gap our Almond Milk Brands Compared piece found between Elmhurst and Silk’s almond lines. Edensoy also uses more real soybean content, which is the direct cause of its higher calorie count too.
Does any soy milk brand split between a clean and a non-clean version, like Califia’s almond milk does?
Not among the four we checked here. Pacific Foods does sell a different, sweetened “Ultra Soy” product line alongside its Organic Unsweetened soy milk, so checking for “Unsweetened” on the carton still matters — but we didn’t find a non-organic “Unsweetened” SKU from any of these four brands that fails the way Califia’s non-organic almond milk does.
Which soy milk has the most fiber?
Westsoy Organic Unsweetened Plain, at 4g per cup — noticeably more than Edensoy, Pacific Foods, or Silk, from a less-filtered extraction process that retains more of the whole soybean.
Does this change the Ingredient-Honest pick on the best milk for coffee guide?
No — Unsweetened Edensoy Organic was already the named clean pick there, and it still is. What this piece adds is the fact that it isn’t the only clean option: Westsoy and Pacific Foods both pass too, at a lower cost per cup, which widens the realistic shopping list for anyone avoiding Silk’s gum and natural-flavor line.