Tofu pesto sauce from a freezer cube

This is the opposite of every other recipe on this site. Nothing gets pressed, nothing gets crisped, and the block you want is the one the rest of these pages tell you to avoid. Silken tofu blends into something genuinely creamy, and pesto has enough salt, fat and herb intensity to carry a whole sauce on its own.

The freezer cube is what makes it a weeknight thing rather than a project. A batch of pesto poured into an ice cube tray gives you two-tablespoon portions that keep for months. One or two cubes plus a block of tofu is dinner.

Pesto alla genovese comes from Liguria in northern Italy, where it is a raw sauce of basil, pine nuts, garlic, hard cheese and olive oil. What follows is not that. It is a tofu sauce that uses pesto as its flavor base, and it is worth being clear about the difference.

Ingredients

• 1 block (12 to 16 oz) silken or soft tofu, drained
• 2 to 3 frozen pesto cubes, about 2 tablespoons each, thawed
• 1 tablespoon lemon juice
• 1 small garlic clove, or half a teaspoon of garlic powder
• Half a teaspoon of salt, plus more to taste
• 2 to 4 tablespoons hot pasta water, to loosen
• Black pepper and grated hard cheese or nutritional yeast, to finish

Drain the tofu but do not press it. The water is the point here. A pressed block gives you a thick paste rather than a sauce.

Method

1. Freeze the base. Spoon pesto into an ice cube tray, freeze solid, then pop the cubes into a labeled freezer bag. Each cube is roughly two tablespoons. Do this once and you have sauce bases for months.
2. Thaw a cube. Two or three cubes, ten minutes at room temperature, or short bursts in the microwave until soft but not hot.
3. Blend. Silken tofu, thawed pesto, lemon juice, garlic and salt into a blender or a tall cup with a stick blender. Thirty seconds, until completely smooth with no grain left.
4. Loosen and warm. Scrape it into a warm pan off the heat, or straight into drained hot pasta. Add hot pasta water a tablespoon at a time until it coats the pasta without clinging in clumps. One to two minutes of gentle heat is enough.
5. Finish. Taste for salt, which it will want more of than you expect. Black pepper and grated hard cheese or nutritional yeast on top.

Do not boil it. Silken tofu holds together at warm temperatures and splits into something grainy at a simmer. Gentle heat, brief contact, then off.

The tray is the real idea

Pesto is one option. The technique is a freezer tray of concentrated flavor bases, each portioned to the amount that will season one block of tofu. Any thick, salty, fat-carrying paste works, and each one sends the same sauce somewhere completely different.

Harissa is North African, curry paste Thai, gochujang Korean, chipotle Mexican. The tofu is doing the same job in every row: carrying salt and fat in a creamy body. Only the cube changes.

Freeze each base in its own tray section and label the bag. Frozen pastes all look alike after a month. The full system, including what freezes badly and how to run a batch session, is on the freezer flavor cubes page.

Adjusting the result

Too thick: hot pasta water, a tablespoon at a time. Plain water works but pasta water emulsifies better.

Too thin: you used soft rather than silken, or too much water. Blend in a spoonful more pesto or a handful of cashews.

Tastes flat: salt and acid, in that order. Tofu absorbs salt without ever reading as salty, which is the same problem the seasoning guide covers for the fried versions.

Tastes of tofu: more pesto, more lemon, more garlic. Two cubes to one block is the floor, not the ceiling.

Went grainy: it got too hot. There is no recovering that batch, but the next one will be fine at lower heat.

Making it a meal

Over pasta is the obvious one and needs nothing else. It also works as a dressing thinned with more lemon, a dip left thick, a spread on toast under roasted vegetables, or a sauce poured over crispy tofu, which gives you tofu twice in two completely different textures.

It keeps three days in the refrigerator and thickens as it sits. Loosen with water and stir rather than reblending. It does not freeze well once blended, which is why the cubes hold the pesto rather than the finished sauce.

Why silken, specifically

Silken tofu is coagulated in its final package and never pressed, which is why it blends smooth instead of grainy. Firm tofu blended with the same amount of liquid stays slightly rough no matter how long the blender runs. The types guide explains what separates them.

It is also the cheapest protein in the sauce aisle by some distance, and a block adds a substantial amount to a plate of pasta without changing the flavor of the pesto at all. That combination is the whole argument for this recipe.