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Portillo's (River North)
Portillo's began in Villa Park in 1963 and is now a national chain; this Prohibition-themed restaurant at Clark and Ontario is its downtown Chicago flagship, serving Chicago-style hot dogs, Italian beef, burgers, and the chocolate cake shake until 1 AM daily. The chain publishes a nutrition and allergen guide with item-by-item columns for egg, fish, milk, peanuts, shellfish, soy, tree nuts, wheat, and gluten, though the guide does not include a sesame column. It is classified here as a national chain rather than an independent, despite its Chicago roots. For a fast-food counter downtown, the published guide is the practical tool: check the item before ordering, because the menu is bun- and fryer-heavy.
Contact & location
- Address
- 100 W. Ontario St., Chicago, IL 60610 River North
- Phone
- Call 312-587-8910
- Hours
- Mon–Sun 10:00 AM–1:00 AM
- Website
- locations.portillos.com/chicago
Decision snapshot
- Evidence tier
- Allergen menu documented
- Hours
- Mon–Sun 10:00 AM–1:00 AM
- Allergen menu
- Item-by-item allergen menu published
- Allergens documented
- Gluten, Milk, Egg, Peanut, Tree nut, Fish, Shellfish, Soy, Wheat
ConfidentDiner collects allergen and preparation information from restaurants’ published materials, from restaurants themselves, and from diners. Information is dated and sourced, but menus, ingredients, suppliers, staff, and kitchen practices change without notice, and cross-contact can occur in any non-dedicated kitchen. Nothing on this site is medical advice or a guarantee that any restaurant or dish is safe for any individual. Always tell the restaurant about your allergy, confirm current practices directly before ordering, and make your own decision with your medical professional’s guidance.
The protocol, in full: Allergen documentation
| Gluten | Documented in the restaurant's own published allergen material Portillo's · 2026-10-28 |
|---|---|
| Milk | Documented in the restaurant's own published allergen material Portillo's · 2026-10-28 |
| Egg | Documented in the restaurant's own published allergen material Portillo's · 2026-10-28 |
| Peanut | Documented in the restaurant's own published allergen material Portillo's · 2026-10-28 |
| Tree nut | Documented in the restaurant's own published allergen material Portillo's · 2026-10-28 |
| Fish | Documented in the restaurant's own published allergen material Portillo's · 2026-10-28 |
| Shellfish | Documented in the restaurant's own published allergen material Portillo's · 2026-10-28 |
| Soy | Documented in the restaurant's own published allergen material Portillo's · 2026-10-28 |
| Wheat | Documented in the restaurant's own published allergen material Portillo's · 2026-10-28 |
| Sesame | Not published in the restaurant's own material — ask before you go (not documented) Portillo's · 2026-10-28 |
The protocol, in full: Kitchen protocol
| Allergen menu | The chain publishes a nutrition and allergen guide with item-by-item allergen columns for egg, fish, milk, peanuts, shellfish, soy, tree nuts, wheat, and gluten; the guide has no sesame column. Portillo's · 2026-10-28 |
|---|---|
| Dedicated facility | Not published in the restaurant's own material — ask before you go (not documented) Portillo's · 2026-10-28 |
| Dedicated fryer | Not published in the restaurant's own material — ask before you go (not documented) Portillo's · 2026-10-28 |
| Dedicated prep | Not published in the restaurant's own material — ask before you go (not documented) Portillo's · 2026-10-28 |
| Staff training | Not published in the restaurant's own material — ask before you go (not documented) Portillo's · 2026-10-28 |
| Order flagging | Not published in the restaurant's own material — ask before you go (not documented) Portillo's · 2026-10-28 |
| Cross-contact statement | Not published in the restaurant's own material — ask before you go (not documented) Portillo's · 2026-10-28 |
The protocol, in full: The visit
| Price band | Not published in the sources checked (not documented) Portillo's · 2026-10-28 |
|---|
Good to know before you book
- The chain publishes a nutrition and allergen guide with item-by-item allergen columns for egg, fish, milk, peanuts, shellfish, soy, tree nuts, wheat, and gluten; the guide has no sesame column. — Portillo's, 2026-10-28
Questions diners ask about this place
Does Portillo's (River North) publish an allergen menu?
Yes. Portillo's (River North) publishes an allergen menu that marks dishes item by item, linked from this page. We last checked it on 2026-10-28. A published menu documents ingredients as the restaurant states them — it is not a guarantee, and menus change, so confirm when you order.
Which allergens does Portillo's (River North) document?
Portillo's (River North)'s own published material documents: Gluten, Milk, Egg, Peanut, Tree nut, Fish, Shellfish, Soy, Wheat. The allergens we track that it does not document are: Sesame. Undocumented means we found no published information — not that the allergen is absent.
Does Portillo's (River North) document a dedicated fryer or prep area?
Not in the published material we checked on 2026-10-28. The protocol table on this page shows exactly what is and is not documented, and the visit-prep card lists the questions to ask instead.
How current is the information on this page?
Every fact here comes from Portillo's and was last checked on 2026-10-28. Kitchens change staff, suppliers and menus without notice — always tell the restaurant about your allergy and confirm current practice before ordering.
Is this your listing?
Claim this listing free to correct anything here, add photos, and complete the details the public record leaves blank — 8 items are currently marked "not documented" on this page. Claiming never buys a higher evidence tier: tiers are earned by documentation, checked the same way for everyone.
Source & freshness
Source: Portillo's · Last checked: 2026-10-28
Report a change or an error — reports are checked and logged on this page.
Change log
- 2026-10-28 — Listing published from the restaurant's own published allergen material (datasets v1 + expansion pass 2, merged Oct 28, 2026).
More options in Chicago
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- Defloured: A Gluten-Free Bakery — Allergen menu documented, last checked 2026-10-28
- Mindful Baking Kitchen & Cafe — Allergen menu documented, last checked 2026-10-28
- CheSa's Bistro & Bar — Allergen menu documented, last checked 2026-10-28
Portillo's (River North) — visit-prep card
Allergen menu documented · Last checked 2026-10-28 · Source: Portillo's
- Address
- 100 W. Ontario St., Chicago, IL 60610
- Phone
- 312-587-8910
- Hours
- Mon–Sun 10:00 AM–1:00 AM
- Allergen menu
- https://www.portillos.com/
Key facts
- Allergen menu: Item-by-item allergen menu published
- Allergens documented: Gluten, Milk, Egg, Peanut, Tree nut, Fish, Shellfish, Soy, Wheat
Questions to ask before you order
- Is the fryer shared with breaded or battered items, and what else is cooked in that oil?
- Is there a separate prep area, boards and utensils for allergy orders?
- How is an allergy order flagged and communicated to the kitchen, so it cannot be mixed up?
- How are staff trained on food allergies, and how often is that training refreshed?
- What do you do to prevent cross-contact during prep, cooking and plating?
ConfidentDiner collects allergen and preparation information from restaurants’ published materials, from restaurants themselves, and from diners. Information is dated and sourced, but menus, ingredients, suppliers, staff, and kitchen practices change without notice, and cross-contact can occur in any non-dedicated kitchen. Nothing on this site is medical advice or a guarantee that any restaurant or dish is safe for any individual. Always tell the restaurant about your allergy, confirm current practices directly before ordering, and make your own decision with your medical professional’s guidance.