The phrase "a true substitute for" is correct and usable in written English.
It can be used when discussing whether one thing can effectively replace another in a specific context.
Example: "While some people believe that plant-based meat is a true substitute for beef, others argue that the taste and texture are not quite the same."
Alternatives: "an actual replacement for" or "a genuine alternative to".
But analysts say such sales are still too small to measure and cannot yet be viewed as a true substitute for purchasing music on CD's, tapes or records.
And the Xbox won't be a true substitute for everything viewers can get through their cable boxes because content rights will have to be negotiated for some shows before they can be watched through the console.
Pfizer says the strips are not a true substitute for rinsing with Listerine, because the liquid version tends to be more thorough as a germ killer than the strip.
There is no true substitute for butter, which is traditionally brushed on each layer of dough to impart richness, flavor and a delicate crispness.
Whenever parents' reports are used alone, such as with children who are unable to respond independently, the clinician should be aware that although parental perspectives are important, parents are not true substitutes for reporting the HRQL of their children, and that relying on parents' reports alone may result in an incomplete HRQL assessment.
But despite its mainstream success, questions have always lingered about whether the popular tablet is a true laptop substitute -- especially for the business set.
The appraisal sessions are an opportunity to gauge the approximate value of an object, but they are not a substitute for true appraisals, which involve creating a report signed by an expert that can be used for tax and estate purposes.
This type of crowdfunding has proven to be a poor substitute for true early stage investing.
Unlike prior approaches, the SX Pro technology offers a stable sound field during fast changes in content, and consistent, distinct positioning of audio sources, offering a realistic substitute for true 5.1 mixes when they are not available.
25) "Velveeta is not a good cheese substitute for lasagna; true in the 60s, true in the 70s, and still true in the 21st Century," said James Vaughn.
In tropical America, Phyllostylon brasiliensis (San Domingo boxwood) has been suggested as a substitute for true boxwood (Buxus).
