How long doesSoy flourlast in the fridge?
The methods the USDA actually rates for this item
The USDA rates only 2 of its nine storage methods for this item, and the pantry from the day of purchase and refrigerator from the day of purchase are what it rates. The other 7 slots are blank, and a blank is not a zero: it means no published figure, not that the method fails.
Every storage figure the USDA publishes for this item
The USDA gives this item a pantry and a refrigerator figure and no freezer figure at all, the pattern behind 79 of the 466 foods in the data.
- Unopened · in the pantry2 months
- Unopened · in the fridge6 months
Turning the range into a date
Counting 6 months forward from a date is not arithmetic anyone does reliably in their head. Give the field the day it went into storage.
- Unopened · in the pantryUse by2 months after the day you bought it
- Unopened · in the fridgeUse by6 months after the day you bought it
Is this window about safety or about taste?
The answer at the top of this page reads 6 months in the fridge. Soy flour, full-fat does spoil, but a bacterial limit runs in days and this window runs past six weeks: the figure rates how good it will be. Past it, judge it by look and smell: this window rates how good the food will be, not the day it becomes a hazard.
Every figure assumes the food was sound when you stored it, that your refrigerator holds 40 °F or below and your freezer 0 °F or below, and that the package was handled normally.
It is past the date. Now what?
Say the calculator above puts Soy flour, full-fat past its 6 months in the fridge window. Past that the calendar stops deciding and the food itself does. Mold, a slimy or sticky surface, soft or darkened spots, or a sour smell mean it goes out whatever the date says.
The FoodKeeper entry this page is built from prints storage times and nothing else, so anything past them here is USDA and FSIS guidance rather than a figure from the source. The whole rule, including the cases the source does not cover, is set out under what to do when the date has passed.
Two places, and one of them is the wrong one
The USDA rates two places for Soy flour, full-fat in one state and they disagree: 6 months in the fridge against 2 months in the pantry. This page answers with the refrigerator, the longer of the two. Both figures are the USDA's own, so this is a choice of where to put the food rather than a disagreement about how long it keeps.
Is that a long time?
Among the 5 items the USDA files under Vegetarian Proteins, this item ranks 3 by how long it keeps outside the freezer. Miso holds 1 year, Re-hydrated textured soy protein, (TSP) holds 4 months. Among the 340 foods the USDA also gives a refrigerator figure, it keeps longer than 84% of them.
Items that behave the same way
The 4 items below are the closest match to this item by storage behavior, running 1 week to 2 years and bracketing its 6 months.
Products the USDA rates in the same places
9 other products are rated in exactly these places — pantry from the day of purchase and refrigerator from the day of purchase — out of the 466 in the file, so this is an uncommon shape of record. The nearest of them by keeping time are Pumpkins, Jicama and Tapenade. They are listed below with their own answers, closest first, which is why this list differs from the one on their pages. Of the 8 shown, 2 keep longer than this one. The longest-keeping of them is Almond oil at 2 years.
- Pumpkins3 months sealed in the fridge
- Jicama4 months sealed in the pantry
- Tapenade9 months sealed in the fridge
- Citrus fruit10 days sealed in the pantry
- Coconuts2 weeks sealed in the fridge
- Artichokes1 week sealed in the fridge
- Taro7 days sealed in the pantry
- Almond oil2 years sealed in the fridge
The rest of the Vegetarian Proteins shelf
Vegetarian Proteins is a short shelf: 4 products besides this one. They run from Textured soy protein at 2 years down to Tofu at 1 week, and this product sits with 2 products above it. A shelf this small is worth reading whole, which is why every one of them is printed below rather than a sample. Across the whole of Vegetarian Proteins the same product ranks 3 of 5. The middle of the shelf is Re-hydrated textured soy protein, at 4 months. The freezer is left out of the order on purpose: it flattens almost everything it touches.
- Re-hydrated textured soy protein4 months3 days in the fridge
- Tofu1 week1 week sealed in the fridge
- Miso1 year1 year sealed in the fridge
- Textured soy protein2 years3 months in the pantry once opened
If it has to keep longer than this
If it has to keep longer than 6 months, Vegetarian Proteins offers 2 products that hold at least twice as long outside the freezer. The nearest step up is Miso at 1 year against this one's 6 months, and the rest are Textured soy protein. A short list like this one is itself the finding: the category has few longer options. In the other direction, 1 entry in the category keeps half as long or less, Tofu among them. The largest step the category offers is Textured soy protein at 2 years.
- Miso1 year1 year sealed in the fridge
- Textured soy protein2 years3 months in the pantry once opened
The record this page is built from
This page is built from a single FoodKeeper row, record 170 — the source’s own number for it, not a position — one of the 661 rows in the snapshot. That row fills 2 of the nine storage slots with a time, and the binding figure on it is printed by the source in months, which is the unit this page keeps rather than converting it to days. Every figure here comes from one fixed snapshot, USDA FoodKeeper, retrieved 1 September 2026, and is not refreshed page by page.
Where these numbers come from
Every range on this page is published by the USDA FoodKeeper and reproduced unchanged. The multipliers, the rankings, the percentages and the dates are ours, computed from those ranges. Where the source gives a span such as 3 to 5 weeks, comparisons use the upper figure, and the full span is always printed.
Rankings cover only the items the USDA gives a usable figure for, and identical ranges share a place rather than being ordered arbitrarily. Neighbors are chosen by nearest storage time within the same category, never alphabetically: two foods filed next to each other by name usually have nothing to do with each other. The freezer is excluded from ranking because it flattens almost everything.
Where the USDA lists several kinds under one name, they share one page here and every kind keeps its own windows: the source prints them as separate rows, and a page that merged them would be inventing a figure the source never published. Comparisons and the place in the category are computed for the kind the plain name means — the shell egg for eggs, the can for tuna — which is settled name by name rather than by the order the source lists its rows in, and the page names it. Where the plain name means no single kind, the page prints no single figure at all and lists the kinds instead.
Source: USDA FoodKeeper, retrieved 1 September 2026. This site computes every comparison on this page and takes responsibility for it. Found a figure that does not match the source? Tell us on the contact page, with the page and the row — the parsing is mechanical, so a mismatch is our bug and we want it. How the whole site is built, which figures are ours and where the source can be checked is on the method page.
USDA index terms: fat, flour, full fat, soy, Soy flour
KeepsUntil is an independent reference built on public USDA data. It is not affiliated with, endorsed by, or connected to the U.S. Department of Agriculture or the Food and Drug Administration. Whether a given window is a safety limit or a quality window is stated on the page that prints it.