How to Simmer Water: The Average Simmering Guide

Simmering water is a fundamental cooking technique where liquid is held just below the boiling point, around 185°F to 205°F (85°C to 96°C). It’s the gentle bubbling that cooks grains, poaches eggs, and builds stocks without the violent agitation of a rolling boil. This guide explains exactly what average simmering water looks like, how to achieve it, and how to use it reliably in your kitchen.

Ingredients

1 quart (946 ml) cold water
Salt (optional, for seasoning)

Instructions

Fill a pot with cold water. Use a pot that’s large enough to avoid overflows when you add food later.
Place the pot on the stove over medium-high heat. Cover with a lid to speed up heating.
Watch the water. As it heats, you’ll see small bubbles form at the bottom of the pot. This is the “pre-simmer” stage, around 160°F (71°C).
When the water starts to steam and you see occasional tiny bubbles rising to the surface, reduce the heat to medium-low or low. The goal is to maintain a steady stream of small bubbles that break the surface gently, but not a vigorous boil.
Adjust the heat as needed. If the water is boiling vigorously, turn the heat down. If the bubbles stop entirely, turn it up slightly. The ideal simmer shows constant, lazy bubbles across the surface.
Use immediately for your recipe. If you’re simmering for a long time (like stock), keep the lid slightly ajar to allow steam to escape and prevent the liquid from reducing too quickly.

Tips

Use cold water: Hot tap water can contain more dissolved minerals and may affect the taste of delicate dishes. Always start with cold, fresh water.
Don’t walk away: A simmer can quickly turn into a boil if the heat is too high. Check every few minutes and adjust the burner.
Cover for faster heating: A lid traps heat and brings water to a simmer faster, but once simmering, remove it or tilt it to control the temperature.
Use a thermometer for precision: If you’re making something like a poached egg or a delicate sauce, a kitchen thermometer helps you hit the exact temperature range of 185°F to 205°F (85°C to 96°C).

Serving Suggestions

Simmering water is not a dish itself, but it’s the base for countless recipes. Use it to:

Poach eggs, chicken, or fish.
Cook grains like rice, quinoa, or barley.
Simmer stocks, broths, and soups.
Blanch vegetables or loosen tomato skins.

Variations

Shallow simmer: For poaching eggs, you only need about 2–3 inches of water. The same gentle bubbles apply.
Deep simmer: For stocks or large batches of beans, use a tall pot and fill it two-thirds full. The simmer is the same, but you’ll need to watch evaporation.
Seasoned simmering water: Add salt, herbs, or a splash of vinegar to the water to flavor whatever you’re cooking. Acid helps keep poached eggs whites together.

Storage and Reheating

Simmered water is just water, so it doesn’t need storage. However, if you’ve used it to cook something and want to reuse the liquid (like a vegetable broth), let it cool to room temperature, then refrigerate in an airtight container for up to 3 days. Reheat it to a simmer on the stovetop before using. Do not leave simmering water unattended, and never store hot liquid in the fridge—it can raise the fridge temperature and spoil other foods.

Frequently Asked Questions

What does a simmer look like? A simmer is characterized by small bubbles that rise steadily to the surface and break gently. The water is steaming, but it’s not rolling or splashing. You should see movement across the entire surface, not just at the edges.

What’s the difference between simmering and boiling? Boiling occurs at 212°F (100°C) and produces large, vigorous bubbles that break the surface aggressively. Simmering is lower, around 185–205°F (85–96°C), with much gentler bubble action. Boiling can break apart delicate foods and cause rapid evaporation.

Can I simmer water in a microwave? Yes, but it’s trickier. Microwave heating can cause water to superheat—become hotter than boiling without bubbling—which is dangerous. If you must use a microwave, heat in short bursts and stir frequently. For safety, stovetop simmering is recommended.

How long does it take to bring water to a simmer? On a typical stovetop, 1 quart (946 ml) of cold water takes about 5–7 minutes to reach a simmer over medium-high heat. The time varies with pot size, thickness, and stove power.

Should I cover the pot when simmering? It depends. Covering traps heat and speeds up the process, but it can also cause the temperature to rise too high. For a controlled simmer, leave the lid off or slightly ajar. For long simmers (like stock), a lid helps reduce evaporation but watch the temperature.

Is a simmer the same as a “low boil”? People often use the terms interchangeably, but technically a low boil is still at 212°F (100°C) with occasional large bubbles. A true simmer is below boiling. For most recipes, a simmer is what you want—it cooks gently without overcooking.

More recipes to cook

Safety notes: safe minimum internal temperatures from USDA FSIS; raw and undercooked fish guidance from the U.S. FDA. Food safety notes

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